Replies

1. 
   Rich14 | Feb 05, 2005 11:28pm | #1

   Pinky,

   The general "rule of thumb" is to use a fan whose CFM capacity is equal to the volume of the room. Your room is 1200 cu ft. That means a 1200 CFM fan should be adequate. That doesn't mean the fan will actually exchange all the air in the room every minute.

   Rich

   Don't ever learn anything new. Rather than give you satisfaction that you know more than you did, it will only confirm you know less than you thought by opening horizons to things of which you had never dreamt and which you now must explore.

1. 
   tms | Feb 06, 2005 07:20am | #2

   I'm pretty sure that the OSHA requirement is for 100cfm past the face opening of the booth.Tom

1. 
   Rich14 | Feb 06, 2005 09:48am | #3

   Thanks Tom.Rich

2. 
   Paul_Snyder | Feb 06, 2005 05:47pm | #4

   The fan should move at least 100 CFM per square foot of cross section area. If you're going to use the entire room as a spray area, and it's 10' high and 12' wide, you'll want a fan that can move at least 12,000 CFM (10x12x100). You'll also need a source of fresh, filtered air to replace the air you exhaust. So on one end of the room you'll exhaust the air through a filter bank, and on the other end of the room you'll have an opening with filters to supply air into the room.

   There was a discussion on this subject on Woodweb recently; you can check it out at this link - http://www.woodweb.com/cgi-bin/forums/finishing.pl?read=382153

   Paul S
   Website