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Supplier: Fläkt Woods Group SA
Description: Roofmaster STEF is available in an ATEX-version for Category 3G, Zone 2. The fan is driven with an Ex IIT3 or an Ex de IIBT4 motor. If the roof fan is intended for a frequency converter drive, the Ex de type motor must be selected. The Ex de motor is equipped with thermistors. In size
- Air Flow Rate: 2543 SCFM
- Applications: Exhaust Ventilation
- Material: Steel
- Static Pressure: 2.01 in H2O
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Supplier: Gardner Denver S.r.l.-Division Robuschi
Description: Compact unit for vacuum operation with RB-DV air injection vacuum blower, which makes it possible to reach a high compression ratio by means of a patented atmospheric air injection device ROBUSCHI that reduces overheating of the gas and the power absorbed by the blower. The unit maintains all the
- Applications: Exhaust Ventilation
- Design Configuration: Positive Displacement / Rotary Lobe
- System: Packaged (Complete System)
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Supplier: Gardner Denver S.r.l.-Division Robuschi
Description: The new ROBOX evolution, especially developed for the conveying and compression of biogas, as well as natural and landfill gases in power generation plants. This special Unit for BIOGAS application maintains all the innovative characteristics of the ROBOX evolution: silence, compactness, and easy
- Applications: Exhaust Ventilation
- Design Configuration: Positive Displacement / Rotary Lobe
- System: Packaged (Complete System)
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Supplier: Gardner Denver S.r.l.-Division Robuschi
Description: evolution can be placed side by side thereby significantly reducing the space they require and therefore the dimensions of the blower room. ROBOX evolution in the ATEX version, available on request.
- Applications: Exhaust Ventilation
- Design Configuration: Positive Displacement / Rotary Lobe
- System: Packaged (Complete System)
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Supplier: Fläkt Woods Group SA
Description: customer wish for a larger STOF unit an adapter plate can be provided to make the installation as easy as possible. Fans are suitable for different roof curb mounting using an installation frame or can be fitted directly to roof base. The motor is a single phase, AC external rotor motor with
- Air Flow Rate: 9959 SCFM
- Applications: Exhaust Ventilation
- Material: Aluminum, Steel
- Static Pressure: 2.61 in H2O
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Supplier: Fläkt Woods Group SA
Description: a customer wish for a larger STOF unit an adapter plate can be provided to make the installation as easy as possible. Fans are suitable for different roof curb mounting using an installation frame or can be fitted directly to roof base. The impeller for all STOF models is made of polyamide or
- Air Flow Rate: 9959 SCFM
- Applications: Exhaust Ventilation
- Material: Aluminum, Steel
- Static Pressure: 2.61 in H2O
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Supplier: Fläkt Woods Group SA
Description: Suitable for Volume flows up to 5 m³/s (18 000 m³/h) and Max pressure rise up to 700 Pa. Fitted with an AC-motor operating Direct On Line or with integrated or loose delivered speed control. Insulated casing providing low sound level. High efficiency impeller and design. ErP 2015 compliant .
- Air Flow Rate: 10594 SCFM
- Applications: Exhaust Ventilation
- Static Pressure: 2.61 in H2O
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Supplier: Thermon, Inc
Description: Specifically designed for both hazardous and general purpose industrial applications, the Ruffneck™ EFX Explosion-Proof Exhaust Fan is built for safety and durability. A number of optional features are available for customization, including Heresite® coating on all non-motor
- Applications: Exhaust Ventilation
- Design Configuration: Axial
- Drive Options: Direct Drive
- Environment: Clean Air / Gas, Dirty Air / Gas, Smoke, Other
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Supplier: Twin City Fan & Blower
Description: Application The BCRU Centrifugal Roof Exhauster is designed for roof mounted exhaust of relatively clean air for applications that require exhausted air to be moved up and away from the building, and where re-entry into the building supply air is possible. The BCRU features a
- Air Flow Rate: 585 to 29100 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Centrifugal
- Drive Options: Belt Drive
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Supplier: Twin City Fan & Blower
Description: Application The BAIFE Induced Flow, Centrifugal Exhaust Fan is intended for use in exhausting laboratory fumes and hazardous chemicals in such a manner that diminishes the likelihood of concentrated, contaminant-laden air from being re-entrained into the building's intake or
- Air Flow Rate: 135000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Environment: Clean Air / Gas
- Maximum Diameter (Fan or Blower Wheel): 12.25 to 66 inch
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Supplier: Johnson Controls, Inc.
Description: competition. Its versatility allows it to compete with any vaneaxial, mixed flow, or tubular centrifugal fan. FEATURES AND BENEFITS Class I, II heavy-gauge steel, mixed flow inline fan. Belt drive; patented wheel design. Application: Exhaust, supply, or return air in
- Air Flow Rate: 1300 to 155000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Axial, Centrifugal
- Drive Options: Belt Drive
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Supplier: Twin City Fan & Blower
Description: Application The FAB Fiberglass Roof Ventilator is specifically designed for the exhaust of moisture-laden, corrosive, or chemically contaminated air frequently associated with natatoriums, aquariums, indoor swimming pools, laboratories, and waste water treatment plants. The
- Air Flow Rate: 1055 to 19500 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Drive Options: Belt Drive
- Environment: Clean Air / Gas
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Supplier: Twin City Fan & Blower
Description: Application The WAB Fiberglass Centrifugal Roof Ventilator is specifically designed for applications requiring the exhaust of chemical fumes or cooking grease where the removal away from the roof line is required. This unit is ideal for use with ducts, hoods, or canopies over
- Air Flow Rate: 1390 to 21500 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Drive Options: Belt Drive
- Environment: Clean Air / Gas
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Supplier: Johnson Controls, Inc.
Description: A continuing demand exists in commercial and industrial buildings for high velocity roof ventilators which exhaust foul air and disperse it high above the roof. The YORK® VU-Series is ideal for the “spot” ventilation of specific problem areas where rapid air removal is necessary
- Air Flow Rate: 33000 to 82000 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Axial
- Drive Options: Direct Drive, Belt Drive
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Supplier: Johnson Controls, Inc.
Description: YORK® CIR Inline fans are widely used in round ducts as clean air boosters in both supply and exhaust systems where the installation of conventional blowers is impractical. Their compact design gives designers an excellent alternative to conventional blowers. FEATURES AND BENEFITS
- Air Flow Rate: 75 to 22054 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Centrifugal
- Drive Options: Direct Drive, Belt Drive
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Supplier: Johnson Controls, Inc.
Description: operation for many years. FEATURES AND BENEFITS Heavy-duty construction, wall-mount propeller fans. Direct or belt drive. Application: Supply/Exhaust for warehouses, factories, and mechanical rooms. Capacity: Up to 323,000 cfm; 0 - 1.8” w.g. Aluminum or steel propeller
- Air Flow Rate: 323000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Axial
- Drive Options: Direct Drive, Belt Drive
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Supplier: Nortek, Inc.
Description: CENTRIFUGAL TYPE 21-1/2 INCH 12-1/4 INCH 11-3/4 INCH 120 VAC AT 60 HZ INPUT SUPPLY RATING 2.2 AMPERE CURRENT RATING 232 W POWER RATING 890/990 RPM SPEED RATING 20 GAUGE RUGGED GALVANIZED STEEL HOUSING MATERIAL 519 CFM DELIVERY RATE 3.4 SONES SOUND RATING LOSONE SELECT[R] BRAND APPROVAL UL, CUL
- Air Flow Rate: 519 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Centrifugal
- Environment: Clean Air / Gas
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Supplier: Nortek, Inc.
Description: INTERNAL TYPE 15 INCH WIDTH X 4-1/4 INCH DEPTH X 10-3/4 INCH HEIGHT OVERALL DIMENSION 120 VOLT AC AT 60 HERTZ INPUT SUPPLY RATING 460 CFM (VERTICAL), 500 CFM (HORIZONTAL) FLOW RATE AIR CIRCULATION APPLICATION INTERIOR MOUNTING TYPE VERTICAL/HORIZONTAL DISCHARGE TYPE ELITE BRAND APPLICABLE STANDARD
- Air Flow Rate: 460 to 500 SCFM
- Applications: Exhaust Ventilation
- Environment: Clean Air / Gas
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Supplier: Nortek, Inc.
Description: CENTRIFUGAL TYPE 21-1/2 INCH 12-1/4 INCH 11-3/4 INCH 120 VAC INPUT SUPPLY RATING KITCHEN APPLICATION 2.2 AMPERE CURRENT RATING 232 W POWER RATING 805/905 RPM SPEED RATING RUGGED GALVANIZED STEEL HOUSING MATERIAL 472 CFM DELIVERY RATE 3.8 SONES SOUND RATING LOSONE SELECT[R] BRAND APPROVAL UL, CUL
- Air Flow Rate: 472 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Centrifugal
- Environment: Clean Air / Gas
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Supplier: Nortek, Inc.
Description: 34.6 INCH 13.25 INCH 21.1 INCH 120 V AT 60 HZ INPUT SUPPLY RATING BATHROOM, KITCHEN APPLICATION 1.4 AMPERE CURRENT RATING 147 W POWER RATING 64 TO 146 CFM DELIVERY RATE APPROVAL UL (CANADA AND US) DUCT SIZE 6 INCH DIA
- Air Flow Rate: 64 to 146 SCFM
- Applications: Exhaust Ventilation
- Environment: Clean Air / Gas
- Maximum Diameter (Fan or Blower Wheel): 13.25 inch
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Supplier: Terra Universal, Inc.
Description: Low-profile design allows cleanroom installation inside rooms with standard 9-foot (2743 mm) ceilings Quiet, low-vibration design: only 50 dBA, measured 30" (762 mm) from filter face @ 90 FPM (.5 m/s) Provides an average airflow velocity of 90+ feet per minute (.45+ m
- Air Flow Rate: 310 to 644 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Axial
- Environment: Clean Air / Gas, Light Solids / Powder / Dust
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Supplier: TPI Corporation
Description: 120 V 2 AMPERE 1-PHASE INPUT SUPPLY RATING 1520 CFM FLOW RATE ALUMINUM BLADE MATERIAL 1/8 HP POWER RATING EXHAUST FAN 1660 RPM SPEED RATING WALL MOUNT MOUNTING TYPE DIRECT DRIVE TYPE 14 INCH BLADE DIAMETER 3 SPEED(S) DEPTH 7.18 INCH CE MODEL
- Air Flow Rate: 1520 SCFM
- Applications: Exhaust Ventilation
- Material: Aluminum
- Maximum Diameter (Fan or Blower Wheel): 14 inch
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Supplier: TPI Corporation
Description: 120 V 2.1 AMPERE 1-PHASE INPUT SUPPLY RATING 2100 CFM FLOW RATE ALUMINUM BLADE MATERIAL 1/8 HP POWER RATING EXHAUST FAN 1660 RPM SPEED RATING WALL MOUNT MOUNTING TYPE DIRECT DRIVE TYPE 16 INCH BLADE DIAMETER 3 SPEED(S) DEPTH 7.18 INCH BOLT HOLE CENTER WIDTH 20.34 INCH CE MODEL
- Air Flow Rate: 2100 SCFM
- Applications: Exhaust Ventilation
- Material: Aluminum
- Maximum Diameter (Fan or Blower Wheel): 16 inch
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Supplier: N.R. Murphy Ltd.
Description: Centrifugal blowers designed in a range of sizes and capacities with several wheel designs and fan arrangements available for particular applications. We also carry an extensive list of fan accessories and offer various optional construction for heavy abrasive materials and spark
- Applications: Exhaust Ventilation
- Design Configuration: Centrifugal
- Drive Options: Direct Drive
- Environment: Light Solids / Powder / Dust
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Supplier: CS UNITEC
Description: Spark and explosion proof. The pneumatic fans are driven by a rugged, low maintenance turbine directly from compressed air. Especially suitable for ventilation, exhaust and moving large air volumes through ductwork. Use both in normal atmospheres and where explosion hazard is present.
- Air Flow Rate: 14476 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Axial
- Drive Options: Direct Drive
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Supplier: Magnatex Pumps, Inc.
Description: treatment facilities Ventilation for semiconductor plant clean rooms Oil Lubrication Bearing: Greatly improved bearing life versus conventional grease lubricated units Leakproof shaft sealing prevents oil contamination from external sources Easy inspection and maintenance Easy alignment No
- Applications: Exhaust Ventilation, Pressure / Pressurization Blower
- Design Configuration: Centrifugal
- Drive Options: Belt Drive
- Environment: Corrosive Gases
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Supplier: Enervex, Inc.
Description: The EFV Exhaust Fan is used for bathroom, kitchen and clothes dryer exhaust. It is installed at the exhaust duct termination point where it ensures a negative pressure in the entire duct system. For optimal performance the fan speed can be controlled by a
- Air Flow Rate: 450 to 4000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation, Pressure / Pressurization Blower
- Design Configuration: Centrifugal
- Drive Options: Direct Drive
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Supplier: LTG Incorporated
Description: LTG centrifugal fans in the exhaust series are used mainly to extract combustion gases from industrial plants. Their special design makes them suitable for conveying media of up to 392 °F and volumetric flows of up to 10 005 cfm. They can also be used for other tasks involving high
- Air Flow Rate: 706 to 10595 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Centrifugal
- Environment: Light Solids / Powder / Dust, Smoke
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Supplier: Air Impurities Removal Systems, Inc.
Description: standard “muffin fans” with mesh filters. Far less bulky than air conditioners and compressed air coolers, with superior filtration, and Far Lower Purchase and Operating Costs. 3 Year Warranty
- Air Flow Rate: 350 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
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Supplier: Xylem Applied Water Systems
Description: DC 250 CFM(7.0 m3/min) Flexmount Continuous Duty 4" Blower Model No.: 35770 Series Extended Life 5,000 Hour Motor Tough Reinforced Thermoset Plastic Housing Mounts To Any Flat Surface Slip-On Inlet Ducting Connection Efficient High Volume Air Flow Low-Current Draw Corrosion-Resistant Materials
- Air Flow Rate: 250 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Centrifugal
- Drive Options: Direct Drive
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Supplier: National Fan Company
Description: Exhaust Fan w/ Shutter Heavy Duty : 24 in Blade - 1 speed (5,520 CFM) 3 Phase*INSIDE INSTALLATION FEATURES: The shutter mounted direct drive exhaust fan installs on inside wall. It eliminates need for external framing and shutter. • Sturdily
- Air Flow Rate: 5520 SCFM
- Applications: Exhaust Ventilation
- Features: Wall / Panel Mount
- Maximum Diameter (Fan or Blower Wheel): 24 inch
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Supplier: ProVent LLC
Description: ProVent offers a complete line of industrial fans for both supply and exhaust systems that are suitable for the toughest industrial applications. Fan selection and program curves are readily available using the most current certified fan selection software available. CFM
- Air Flow Rate: 500 to 280000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation, Product / Process Cooling
- Design Configuration: Centrifugal
- Drive Options: Direct Drive, Belt Drive
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Supplier: Pfannenberg
Description: Untreated plastics exposed to continuous sunlight will experience UV degradation; becoming damaged, cracked and brittle. Pfannenberg’s specially treated IP55 UV-Resistant Plastic Filterfans® and UV-Resistant Plastic Exhaust Filters are the best option for use in outdoor applications exposed
- Air Flow Rate: 38 to 297 SCFM
- Applications: Exhaust Ventilation
- Design Configuration: Axial
- Features: Wall / Panel Mount
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Supplier: New York Blower Company (The)
Description: New York Blower FRP Radial Fume Exhausters are compact corrosion-resistant fans for moderate pressure, tough fume-handling applications such as laboratory fume hoods, plating and pickling operations, and scrubber systems.
- Air Flow Rate: 0.0 to 7500 SCFM
- Applications: Exhaust Ventilation, Pressure / Pressurization Blower
- Design Configuration: Centrifugal
- Drive Options: Direct Drive, Belt Drive
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Supplier: Greenheck
Description: quiet and efficient forward curved wheels. These fans are suitable for ducted exhaust, supply and return-air applications with clean air. Capacities range from 400 to 25,000 cfm and up to 3.25 in. wg. Model SWD The SWD is a direct drive utility set with a a backward inclined
- Air Flow Rate: 70 to 69000 SCFM
- Applications: Air Handling Units / HVAC, Exhaust Ventilation
- Design Configuration: Centrifugal
- Drive Options: Direct Drive, Belt Drive
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rooms, hospital emergency rooms and other confined areas or as a partial or complete exhausting system to create a negative pressure isolation room for possible use with patients known or suspected of having TB, SARS or other infectious diseases. As a recirculating unit, the IsoClean®’s (read more)
Browse Medical Equipment and Supplies Datasheets for Envirco -
Fans are used in several industries and applications to move air for heat transfer, (such as convection cooling and heating), air exchange (such as ventilation and exhaust) or filtration. They typically consist of a moving element like blades or vanes, connected through a shaft to a motor that (read more)
Browse Fans and Blowers (industrial) Datasheets for Pelonis Technologies, Inc. -
emergency rooms and other confined areas or as a partial or complete exhausting system to create a negative pressure isolation room for possible use with patients known or suspected of having TB, SARS or other infectious diseases. As a recirculating unit, the IsoClean®’s powerful motor (read more)
Browse Air Filters (industrial) Datasheets for Envirco -
emergency rooms and other confined areas or as a partial or complete exhausting system to create a negative pressure isolation room for possible use with patients known or suspected of having TB, SARS or other infectious diseases. As a recirculating unit, the IsoClean®’s powerful motor (read more)
Browse HEPA Filters and ULPA Filters Datasheets for Envirco -
the first commercial cleanroom, the first laminar flow surgical suite, the first personnel safety exhaust hood, and the first low profile fan filter unit (FFU). Continuing as the leader in product technology for more than 45 years, it is the combination of innovative products with superior service and support that makes Envirco the total clean air solution. (read more)
Browse Cleanrooms Datasheets for Envirco -
(e.g., SO?, HCl). The system typically consists of a compact, enclosed cabinet housing key components: a scrubbing chamber, liquid spray nozzles, packing media, and exhaust fans. The contaminated gas passes through the scrubbing chamber, where it contacts a liquid solution (often water or a (read more)
Browse Pressure Regulators Datasheets for Shenzhen Jewellok Technology Co., Ltd. -
surgical suite, the first personnel safety exhaust hood, and the first low profile fan filter unit (FFU). Continuing as the leader in product technology for more than 45 years, it is the combination of innovative products with superior service and support that makes Envirco the total clean air solution. (read more)
Browse Cleanrooms Datasheets for Envirco -
suite, the first personnel safety exhaust hood, and the first low profile fan filter unit (FFU). Continuing as the leader in product technology for more than 45 years, it is the combination of innovative products with superior service and support that makes Envirco the total clean air solution. (read more)
Browse Cleanroom Supplies and Accessories Datasheets for Envirco -
innovation and high quality, Envirco designed and manufactured the first commercial cleanroom, the first laminar flow surgical suite, the first personnel safety exhaust hood, and the first low profile fan filter unit (FFU). Continuing as the leader in product technology for more than 45 years, it is the combination of innovative products with superior service and support that makes Envirco the total clean air solution. (read more)
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Handbook of Energy Engineering Calculations > INTERIOR CLIMATE CONTROL ENERGY ECONOMICS
In such cities special exhaust fans are not needed to handle cigarette, cigar , or pipe smoke. Restaurants, bowling alleys, billiard rooms , taverns, and similar gathering places prohibit indoor smoking.
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Handbook of Mechanical Engineering Calculations, Second Edition > SELECTING ROOF VENTILATORS FOR BUILDINGS
In such cities special exhaust fans are not needed to handle cigarette, cigar , or pipe smoke. Restaurants, bowling alleys, billiard rooms , taverns, and similar gathering places still permit some indoor smoking.
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item_indices_2010.csv (item-indices-2010.zip)
… 108.802 201001,320122,20 FILTER - OTHER BRAND,1,1,106.996,107.013,106.996 201001,320205,5 CIGARS : SPECIFY BRAND,1,1 … … 4 201001,430129,DINING ROOM TABLE & 4-6 … … 201001,430339,ELECTRIC COOLING FAN ,2,1,98.457 … … SERVICE- MAIN DEALER,2,1,106.428,105.614,105.614 201001,610233, EXHAUST FITTING IN FAST …
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item_indices_2012_q2.csv (item-indices-2012-q2.zip)
… 104.495 201204,320122,20 FILTER - OTHER BRAND,1,1,105.506,105.51,105.506 201204,320205,5 CIGARS : SPECIFY BRAND,1,1 … … 782 201204,430129,DINING ROOM TABLE & 4-6 … … 201204,430339,ELECTRIC COOLING FAN ,2,1,104.903 … … SERVICE- MAIN DEALER,2,1,102.02,101.646,101.646 201204,610233, EXHAUST FITTING IN FAST …
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SemCor (finlayson-gwc2014.zip\CICWN-1.0.zip)
… devoted_J|6 tiled_J|1 hover_V|7 anxiously_R|6 fork_N|8 spoon_N|1 get_down_V|5 openly_R|13 tiring_J|1 feel_like_V|12 sleep_V|51 draughty_J|1 living_ room _N|12 stare_N|4 bleak_J|3 … … shout_N|2 tears_N|7 scream_N|5 contortion_N|1 beset_V|5 hysteria_N|2 shiver_V|8 wailing_N|1 alien_J|5 snicker_V|2 handkerchief_N|3 deathlike_J|1 trance_N|4 exhausted _J|3 pant_V|8 prayer_meeting_N|1 … … glisten_V|3 straggle_V|2 polish_V|8 screech_V|7 tell_on_V|2 grasshopper_N|4 mite_box_N|1 slingshot_N|1 rooftop_N|2 crow_N|2 chew_V|7 roofer_N|1 tar_N|1 cigar _box_N|1 shooter_N|1 roman_candle_N|1 … … relieved_J|5 drunk_J|9 gunpowder_N|2 reload_V|1 meadow_N|5 militia_N|5 make_one's_way_V|11 slow-moving_J|1 the_british_N|1 narrowness_N|1 baggage_N|1 cart_N|5 fan _out_V|4 outrun_V|2 pass_away_V|4 …
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WNGlosses (finlayson-gwc2014.zip\CICWN-1.0.zip)
… quantity_N|311 worth_N|22 vitality_N|37 relief_N|30 muscle_spasm_N|6 pain_N|232 crisis_N|18 ease_V|11 strained_J|7 strict_J|32 least_J|54 markedly_R|18 nuclear_reactor_N|28 exhaust _V|22 grip_V|6 squeeze_N|15 … … ethnic_group_N|19 hand_over_V|1 wanton_N|3 infliction_N|4 yield_V|218 confession_N|8 sol_N|23 whip_V|13 cudgel_V|1 encase_V|10 iron_N|163 crushed_J|14 cigarette_N|26 cigar _N|19 hot_J|123 extremely_R|163 … … middle_N|70 sensuous_J|6 hip_N|32 triple_time_N|8 guitar_N|17 castanets_N|2 strut_V|1 minstrel_show_N|3 originate_V|65 black_N|34 cake_N|60 chorus_line_N|2 erotic_J|11 fan _N|28 manipulate_V|21 suggest_V|76 … … shin_V|34 compulsory_J|7 peacetime_N|3 electric_power_N|7 public_utility_N|7 feudal_J|11 tenant_N|26 lord_N|22 land_tenure_N|4 rent_N|17 burden_V|9 military_service_N|27 army_N|104 rooms _N|24 room_N|161 furnishing_N|10 …
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https://customer.honeywell.com/resources/techlit/TechLitDocuments/68-0000s/68-0102.pdf
a cigarette, cigar or pipe. Return doors, windows, exhaust fans , fireplace other fuel-burning appliance within the same room .