As a homeowner, I have simple air filter needs. My filter is a 16×25×4. Oh, but is it really? No. It’s REALLY15.75×24.75×3.75 — or something goofy like that. Not QUITE right. If I go to Menards and buy their«16×25×4» filter, I’ll need to hammer and kick it into my furnace. Bad idea. Being frustrated, I stopped in to see if he could help me. They seem to deal more with business and industry, but he totally understood my situation. He pulled out exactly what I needed, and it cost much less than the misfitting filters I found elsewhere. So, every year, I swing by to say«hi» and pick up some filters. He looks me up in the system(just in case I forgot my filter size), and I grab a stash. Always with a smile, and always with knowledge and insight I won’t find anywhere else. Simple, reasonable, and reliable. Love these guys!