




🔄 Fold, Fit, and Forget – The Ultimate Crank Handle Upgrade
The Prime-Line H 3962 is a modern, diecast alloy steel folding crank handle designed for universal compatibility with most casement windows. Featuring a compact foldable design to avoid window blind obstruction, it extends 2.75 inches for comfortable operation. Its versatile adapter system and secure set screw attachment make installation quick and reliable, backed by a 1-year warranty for peace of mind.




























| ASIN | B00852EXUS |
| Additional Features | Easy to Install |
| Best Sellers Rank | #59,311 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #59 in Window Dressing Hardware |
| Brand | PRIME-LINE |
| Brand Name | PRIME-LINE |
| Color | White |
| Customer Reviews | 3.7 out of 5 stars 1,374 Reviews |
| Exterior Finish | Painted |
| Finish Types | White |
| Global Trade Identification Number | 00049793039620 |
| Handle Attachment Mechanism | Screw-based |
| Handle Material | Alloy Steel |
| Handle Type | Folding |
| Included Components | Crank Handle |
| Item Depth | 2.75 inches |
| Item Dimensions L x W | 2.75"L x 0.75"W |
| Item Type Name | Crank Handle |
| Item Weight | 2.7 Ounces |
| Manufacturer | Prime-Line Products |
| Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. |
| Material | Diecast |
| Material Type | Diecast |
| Metal Type | Alloy Steel |
| Model Number | H 3962 |
| Number of Items | 1 |
| Product Dimensions | 2.75"L x 0.75"W |
| Projection Distance | 2.75 Inches |
| Shape | Spline |
| Style | Modern |
| Style Name | Modern |
| UPC | 049793039620 |
| Unit Count | 1.0 Count |
C**.
Work with almost any window !
Tons of different size adapters make installation very easy and should adapt to almost any crank out window. Used with some older Andersons that the originals were stripped out and won’t tighten and all other replacements did not fit. With these handles and some wd-40 in all of the mechanical areas the windows are now opening and closing beautifully.
M**Y
Cheap price and cheaply made. Spend a little more and get some quality
Poorly structured together and not very sturdy material. Once you finally find one that fits it doesn't truly fit. It's a battle to crank. Open the window and then to close it. Pretty rickety. I'm returning and will spend the extra few dollars to get solid ones.
K**.
perfect replacement for existing window cranks
Our house is twenty five years old and our window cranks are wearing out. These window cranks are the perfect fit. They are not only attractive but they are easy to change out and are quite durable as well. The white color matches our window frame color perfectly. The fold in easily to accommodate the wood blinds on the window. The price is reasonable as well. You will not be dissapointed.
R**Y
They work
Shipping was quick and the product is ok, just seems to be a little cheap the way it works. The inserts are plastic and I have to keep tightening the screws for them to work but they do work.
F**T
So so quality
6 out of 9 of my cranks came with permanent, blue staining caused by contact with the blue printing of the packaging. Could not remove with isopropyl alcohol nor acetone. Strike one. They have a considerable amount of play in the joints -- so much so that I won't be surprised if the thin roller pins start coming out after a year. As they are cast from low quality pot metal, be really careful tightening down the set screws: might be easy to strip the threads.
A**A
Perfect
I’ve been trying to find new cranks for my old windows for years. I was so happy to find these I grabbed the set and they came in rather quickly. They have multiple fittings which was great found the right size pretty quick! They work so well I got white ones and they go well with my living room color! They seem to be pretty sturdy and love the fact they fold down
A**.
Prevent blinds from getting stuck on casement crank.
We have vertical blinds on our casement windows and they always get caught on the crank. Since this one folds it no longer catches the blinds. The right size plastic insert did need some persuasion to fit (rubber mallet) but at least it's nice and tight fit. I wasn't sure what size the stud was so it's was nice to have multiple size inserts to try. Update 8/24/25. The pin holding the two halves backed out and the hole itself is worn. The casting isn't durable enough to withstand daily use. Great idea but needs to be made of better material or a different joint design. Dropped 2 stars for this. I expect the other cranks to have the same issues over time.
R**S
Collapsing handle upgrade
Perfect application for windows
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