Replacement window cranks

Quick Learner from Greendale, wi

May 31, 2026 2:51 pm

I'm needing help identifying the window cranks in the images I'm looking specifically for the window crank mechanism operator. The teeth have been worn down so the crank doesn't pull the window completely closed.

5 user uploaded images

2 Replies

Bob from SWISCO

May 31, 2026 3:40 pm

Hey there. You might have either the 39-253LB or 39-438B Dual-Arm Operator, depending on the appendage at the end of the straight arm. See the video below for details. For new covers and handles, see the 39-375 or 39-451, depending on the style preferred.