Need Help Identifying Window Operator

A home owner from Green Bay, WI says:
April 15, 2024
Hello,

I have a window operator that appears to be a 39-253LB with a 39-451 cover, however it looks like there are some differences which maybe makes me think it is another part. The cover on my window operator appears to be permanently attached, the gear goes up into the cover. Can you tell me by these photos which part I should purchase to replace it? The gear is stripped and doesn't work.

Thank you,
Ryan
Thumbnail of the uploaded file named truth operator assembly
Thumbnail of the uploaded file named operator gear and base
Thumbnail of the uploaded file named operator base
Thumbnail of the uploaded file named underside of operator
Thumbnail of the uploaded file named operator gear
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Emily from SWISCO responded:
April 17, 2024

Hey there Ryan.

I agree with the parts you picked out. Your operator indeed looks like the 39-253LB and the cover is sometimes built into the operator base which appears to be the case here. The 39-451 will fit the 39-253LB base though since they're compatible parts. 

Let me know if you have any other questions!
Encore Dual Arm Operator, Sill Mount
Encore Dual Arm Operator, Sill Mount
39-253LB
$30.70
Encore Truth Operator Cover and Handle
Encore Truth Operator Cover and Handle
39-451
$12.05
Truth Hardware Track Slider
Truth Hardware Track Slider
39-529
$1.20
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