I guess I'm lucky. It's a stock item in Wilmington, NC and it always costs less than 4".Originally posted by mdshunk:
I do occasionally use it, but I check the price first. Often, 3-1/2 is more expensive than 4", since it's less popular. You need to do a pretty good fitting takeoff for 3-1/2", since if you're short you can't normally buzz on down to the supply house to get one in that size.