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Exhaust Fans

Keep air moving with the right fan for your space. Outfit your shed or silo with a barn fan or ventilate a store or warehouse with a belt driven exhaust fan. Save energy with a solar fan, ideal for green buildings. With more than 20 types and hundreds of models to choose from, Grainger can help keep your facility well-ventilated.

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Exhaust Fans Q&A

HVAC and Refrigeration
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Exhaust Fans
(67 Questions : 75 Answers)

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500 cfm, 6 inch ducting, explosion proof. Ant suggestions?
1 month ago
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Answer: 
Hello. We are sorry but to answer your question we would need more information, such as if you were wanting an inline unit or wall or roof mount unit.

If you could please call 800-472-4643 and speak with one of our HVAC tech reps they will be able to assist you in getting the information you are asking for.

Thank you for using Grainger Ask and Answer.
3 weeks, 6 days ago
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How many CFM per table is required for Florida building code ? also does the fan need to be explosion proof?
2 months ago
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Answer: 
I need more information to answer your question, you most probably don't need explosion proof, but I need more information to help you. Call your local city building code inspector he will help you. You may need: -A 0.6 cfm/ft2 calculate ft area floor, multiply by 0.6. -B use 6 minutes changes, calculate the volume of the room ft3, divide by 6, that's will be the cfm. Take the bigger one (A or B)
2 months ago
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I don't smoke but others that live here and visit do so would like to install exhaust fan to remove smoke so I can still enjoy the porch ad well?
3 months, 2 weeks ago
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Answer: 
We are sorry but to answer your question we would need more information. If you could please call 800-472-4643 and speak with one of our tech reps they will be able to assist you in getting the information you are asking for.

Thank you for using Grainger Ask and Answer.
3 months, 1 week ago
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Answer: 
Snooki,
Since this is a sun porch, just open two or three windows, the smoke will go out, if you want to use it on cold temperature, we need more information.
3 months, 1 week ago
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3 months, 4 weeks ago
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Answer: 
dicker,
Call Grainger, I need more information on this.
3 months, 3 weeks ago
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this is for a small greenhouse
5 months, 2 weeks ago
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Answer: 
littledon,
You may want look, item # 1HKL9 and item 1HKLA1. They are very close to 10" and 12" hole.
5 months, 2 weeks ago
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6 months ago
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Answer: 
Tux94,
I need more information, the speed (1.7 m/s) depended the size of the duct and the volume the air that you are pulling. So, Q cfm = S ft/m X A ft^2 . If you multiply the area of the section of the duct by the speed of the air on that section, you will have the flow (cfm)
6 months ago
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Answer: 
The flow of air would be 122 cubic metres per hour. Diameter of the duct would be around 8-9 cms.
5 months, 4 weeks ago
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Current one,made by Dayton, is too powerful (and not variable speed) and need to replace. What additional information is needed to get correct fan or can you give me item #'s of suggested fans?
6 months ago
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Answer: 
cward121,
I need to know the size of the hood, also your hood has to have a filters and grease trap. I never use a variable speed exhaust fan for a kitchen hood, because if you turn down to much the speed, then you are not pulling out air and grease. We calculate the flow air with the hood size, and that is the way should work. If your exhaust fan its too big, may be its not the right for your hood. Local and national codes will not allow to operate the hood with out the minimum air flow, its dangerous, also many codes, depend where you are, require make up air in the kitchen, in case of fire on your fryer the exhaust fan has to be operate with the full speed so your fire suppressor heat-fuse will sense the fire, open and knock the fire, keep flame up. Ask your local fire marshal before. If this is a residential hood you don't need it.
6 months ago
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I have a 36" 6 blade shop fan that I want to run at low rpm's.

it is belt driven. Would like the option to run at any rpm's if I choose to do so. I would prefer to run the fan around the 150-200 rpms.As I said it has 6 wings with deep pitch. It produces enough cfm's at very low speed.
7 months ago
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Answer: 
fitrish,
Yes Grainger has this motor, but we need more information to select your motor. We want to know: HP? RPM, if you know the pulleys size its easy? Frame? Call Grainger they will help you, but the most important to know its the HP require, its not easy to know that.
7 months ago
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1 answer

Exhaust Fans

How many, what type, size etc. Do I need for a 7200 Square Foot truck mechanics shop
8 months ago
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Answer: 
ddcannon,
I need to know more information to answer your question, you may want two exhaust fans of 6000cfm each one.
8 months ago
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