If you do not sell filters right now, you might want to add that to your hood cleaning. I have been selling them right along. A 20x20 galv baffle filter cost me $8.00, and they are a good quality filter. I resell them for $18 to $22. A 20x25 cost about $11.00 in the door, retail for $20 to $28. If a customer needs 8-10 filters, thats quite a profit for no labor. Pluss you don't have to clean the old ones in the hood. Smith Filter is one supplier, there are many others. Hope this helps.