Block and Tackle Guides

Question

I need a set of guides for my window. They measure 22" (metal only) and are stamped 21 5 LO Caldwell. The top plastic is winged. The bottom is not as measures 1 1/16" front to back.

Bob · Accepted Answer

Hey there. This looks like either an S380-22 or S385-22 Channel Balance, depending on the shoe depth. See below. if it's any greater than 1", most likely this is a Series 385 and the shoe just wore down a bit from age. For a stamp option choose 2150.

Comparison of the S378, S380 and S385 balance shoes.