the bottom rollers are nylon about 3/8 inches wide & 1"3/8 round or 1"1/2. maybe there is a left & right for each door. acme 4011 is stamped on framem. also part #4013-1 & 4013-2. does any one know if these can be found or is there a replacemet part that can be found? thankyou anyhelp would be appreciated.
ed a man in trouble. thanks again

