Truth entry guard casement operator

A handy person from Dearborn Heights Michigan says:
September 24, 2020
45273 crank mechanism, L31539 short curved arm about 3 1/4 inches, 20748 connecting arm about 3 inches, bar on sash is 11 3/8 inches, stainless guide is about 10 inches.Main arm is about 9 1/2 inches long.
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A handy person from Dearborn Heights Michigan says:
September 27, 2020
Which replacement operator will work for this. 20 + yr. old Marvin casement window.
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Tom from SWISCO responded:
September 29, 2020

We don't have an operator that has the same sized link arm as your original. The best options we have are the 39-155 and 39-156, which have a 3-15/16" long link arm, and then the 39-333 and 39-334, which have a 2-15/16" long link arm. Neither are the same, but we have nothing better. Could you get either of these pairs to work for your window?
A quick learner from CO says:
July 18, 2023
is there a kit for entire mechanism for 45273, with inner arm part no. B L 31538 another Part No. 6D700P or is just there a crank opener available for 45273
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Tom from SWISCO responded:
July 18, 2023

I'm afraid those codes don't tell me exactly what you have, since they're used across a few different products. That said they are most commonly associated with our 39-031 and 39-032 Truth Entry Gard operators.

These are unfortunately not sold in kits. The cover, 39-107, and handle, 39-114L, are each sold separately.
Caradco Window Crank, 9-1/2"
Caradco Window Crank, 9-1/2"
39-155
$29.85
Caradco Window Crank, 9-1/2"
Caradco Window Crank, 9-1/2"
39-156
$29.85
Egress Operator, Extra Short Link Arm
Egress Operator, Extra Short Link Arm
39-334
$37.10
Egress Operator, Extra Short Link Arm
Egress Operator, Extra Short Link Arm
39-333
$37.10
EntryGard Dual Arm Operator
EntryGard Dual Arm Operator
39-031
$29.70
EntryGard Dual Arm Operator
EntryGard Dual Arm Operator
39-032
$29.70
Truth Hardware Operator Cover
Truth Hardware Operator Cover
39-107
$3.30
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
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