I think your best bet is to somehow try to match the old one with another maker, It was my understanding that Montgomery Ward went out of business. You also have to find out if the part is actually sold seperately. A plumbing supply can suit your needs better then a home center. Take the part with you if possible. Regards, plumber Tom/Moderator/www.bobvila.com/BBS/Plumbing

The guide was lost when doors were removed approximately 10 years ago.Other guides I have tried have not worked.

call YOW (your other Warehouse) at 1(800) 947-7000 to get some prices on a new set of shower doors. This place is pricey, so You may want to shop around.