window crank mechanism

Hello, thank you for posting,

Please start by reviewing the style and dimensions of the 39-253LB and 39-253RB operators that use the 39-529 track slider. For new covers and handles, take a look at the 39-451 and 39-452 or the 39-375 and 39-376 depending on style preference.

Let us know what you think and if you have any additional questions!