Window crank

A home owner says:
August 6, 2023
Hello, we are in need of a crank out window crank, all we tell you about it is that the guide which is still attached to the window is 11 1/2 inches long, the opening in the window where the crank goes is 4 inched wide, the mounting holes that are visable on the window are two sets, the holes furthest from the sill area are 3 inches apart, there are two more holes a little closer to the sill and they are 1 5/8 inches apart. I believe it was a single arm and the crank was located on the right side of the window sill area. Can you help me identify what crank we need in this or is there any more info I can give you that might help.? There is only one set of numbers on the window itself not the crank but the window, that number isBLR887Y36B2. Thanks for your time.
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Bob from SWISCO responded:
August 6, 2023

Thanks for posting. I'm afraid without seeing the original operator it's going to be very difficult to recommend any replacements. Is there any identical or similar-sized window in the house that still has its operators in place? If so, can you send photos of the entire mechanism from a bird's eye view and that window open? We'll do our best to find something for you from there. 
A home owner from Wisconsin says:
August 7, 2023
We do not have any other window like it in the house. I did find out that it is a TRruth brand operator, will that help in any way along with these pics of where the operator mounts ?
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Dave Sr. from SWISCO responded:
August 8, 2023

We actually had another customer contact us for help with a similar situation recently. We recommended the 39-031, along with the 39-510 sash bracket, which you will need to install on the bottom part of the sash frame. You might even be able to reuse the screw holes in the sash where the original hardware was mounted. Take a look at the suggested parts, along with the related videos, to help with your repair.
Clip-Stud Bracket, Left Hand
Clip-Stud Bracket, Left Hand
39-510
$3.70
#7 x 7/8" Flat Head Philips SS Screw
#7 x 7/8" Flat Head Philips SS Screw
33-115
$0.29
Truth Hardware Operator Cover
Truth Hardware Operator Cover
39-107
$3.30
Truth Folding Handle And Cover Kit
Truth Folding Handle And Cover Kit
39-107FK
$15.45
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
EntryGard Dual Arm Operator
EntryGard Dual Arm Operator
39-031
$29.70
11-3/8" EntryGard Track, 4 Hole
11-3/8" EntryGard Track, 4 Hole
39-505
$3.70
10" Stainless Steel 2 Bar Hinge Set
10" Stainless Steel 2 Bar Hinge Set
36-004-10
$19.93
EntryGard Dual Arm Operator
EntryGard Dual Arm Operator
39-032
$29.70
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
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Watch How To Repair A Casement Window Crank Operator
Watch How To Repair A Casement Window Crank Operator
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SWISCO Window Operator Crank Handles
SWISCO Window Operator Crank Handles
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How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
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Anatomy of a casement window
Anatomy of a casement window
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How to identify casement and awning operators
How to identify casement and awning operators
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