Casement window crank

Question

base of unit (2"x 5") carries number 45179
arm in two segments is labeled with an "L" and the number 31538.
Underside of base has US Patent # 4,2421,541 date 1982

The spiral mechanism that turns toothed gear no longer stays in place.

Casey · Accepted Answer

Hello,

Take a look and compare the specifications of your operator to the Entrygard and Caradco parts we've related for you, paying close attention to the length of the shorter link arm. Thank you!