Prime-Line H 3820 Left-Handed, White, Casement Locking Handle with Offset Base (Single Pack)

Prime-Line H 3820 Left-Handed, White, Casement Locking Handle with Offset Base (Single Pack)

Q: how does this work? Is the black part supposed to be a magnet? There is no way to engage the handle with the other part to secure the window.

I bought these for pull in basement windows. Work really well, no magnets. Lock windows securely.

Q: Do these latches work on windows that open inward?

These are for windows that open outward but I think you can make it work if install in on a side that doesn't open.

Q: What stops the window from being pushed in from the outside? Pictures of your install would be great.

The rectangle black piece is inserted into the strike rectangle opening. It sticks up. The handle tip has a small hook on it. When handle is turned closed, the hook goes behind the raised black piece. This is what keeps it closed. This item is for an outswing window so if it were to be an inswing window, there would me nothing to stop it.

Q: Whats model #for right handle

Matching right hand casement operator is Prime-Line part H 3821 https://www.amazon.com/Prime-Line-Products-3821-Off-Set-Casement/dp/B000VYEW3Q

Product ID: 37512796

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Details

Material
Diecast
Brand
PRIME-LINE
Color
White
Product Dimensions
1.5"L x 3.5"W
Exterior Finish
White

🎨Sleek white finish for modern aesthetics

🔩1.5-inch center mounting holes

⚙️Durable diecast metal construction

Frequently Bought Together

Prime-Line H 3820 Left-Handed, White, Casement Locking Handle with Offset Base (Single Pack)

Prime-Line H 3821 Right-Handed, White, Casement Locking Handle with Offset Base (Single Pack)

Prime-Line H 3597 Right-Handed, Aluminum, Casement Locking Handle with Offset Base (Single Pack)

Description

🔐 Lock in style and security with Prime-Line’s sleek left-handed handle!

SLEEK WHITE FINISH - Clean, modern white coating complements any window frame for a polished, professional look.
LEFT HANDED CONVENIENCE - Specifically engineered for left-hand operation, enhancing ergonomic comfort and ease of use.
ALL INCLUSIVE MOUNTING KIT - Comes with mounting hardware included—just grab a Phillips screwdriver and upgrade your window in minutes.
PRECISION FIT EFFORTLESS INSTALL - Offset base with 1.5-inch mounting holes ensures seamless compatibility with contemporary casement windows.
BUILT TO LAST DESIGNED TO IMPRESS - Robust diecast metal handle offers superior durability and a premium feel that stands the test of time.

The Prime-Line H 3820 is a left-handed casement locking handle featuring a durable diecast metal build and a clean white finish. Designed with 1.5-inch center mounting holes and an offset base for precise fit on contemporary windows, it includes all necessary mounting hardware for quick installation. Ideal for professionals seeking a reliable, stylish window locking solution.

Specifications

Material	Diecast
Brand	PRIME-LINE
Color	White
Product Dimensions	1.5"L x 3.5"W
Exterior Finish	White
Specific Uses For Product	Window
Special Feature	special_feature
Included Components	Screwdriver
Lock Type	lock_type
Theme	Christmas
Item Weight	0.2 Pounds
Center To Center Spacing	1.5 Inches
Metal Type	metal_type
Handle Material	Metal
Hand Orientation	Left
Customer Package Type	1
Unit Count	1.0 Count
Number of Items	1
Manufacturer	Prime-Line Products
Handle Attachment Mechanism	Screws
UPC	049793038203
Indoor/Outdoor Usage	Indoor
Part Number	H 3820
Item Weight	3.2 ounces
Item model number	H 3820
Is Discontinued By Manufacturer	No
Size	1 Pack
Finish	White
Item Package Quantity	1
Number Of Pieces	1
Handle/Lever Placement	Left Hand
Special Features	special_feature
Batteries Included?	No
Batteries Required?	No
Warranty Description	Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse.

Have a Question? See What Others Asked

how does this work? Is the black part supposed to be a magnet? There is no way to engage the handle with the other part to secure the window.

Do these latches work on windows that open inward?

What stops the window from being pushed in from the outside? Pictures of your install would be great.

Whats model #for right handle

Reviews

A**E

Closes window like it should

Worked great. Good replacement choice.

12.09.2025

T**M

This fits perfect & 10 times better than the ( old original Cheap plastic one )

Good strong metal handle NOT CHEAP PLASTIC!!!!!!

3.09.2024

J**

Perfect replacement!

The original that broke was plastic. This is metal and much sturdier. Excellent replacement and upgrade!

5.12.2020

J**R

Great value for a hard to find item

Not super solid nor extremely well-made, but if you just need to have a lock for a basement window that you use occasionally this is a really good deal.

28.05.2024

A**R

fell apart

A month after installation it fell apart

13.09.2025

P**3

Great quality product, that should last!

This is a solidly built product. Very good, substantial metal construction, so it is designed to last. I bought this to replace a plastic version that came with the casement window and the latch had deteriorated with age to the point where the handle just finally snapped off. I swapped out the old plastic latch handle and installed this new metal version in less than 5 minutes.

18.03.2024

M**T

Perfect fit

I am pleased with my purchase. It was the perfect fit, very easy to install and reasonably priced. Thanks.

11.05.2024

A**R

Product quality

Bought this to replace the ones made out of plastic. These fit perfectly and are built well.

23.06.2024

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