---
product_id: 24455007
title: "Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack)"
brand: "prime-line"
price: "€ 31.72"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.it/products/24455007-prime-line-e-2121-mortise-lock-adjustable-spring-loaded-hook
store_origin: IT
region: Italy
---

# 45° angled keyway for enhanced security Adjustable spring-loaded hook latch for smooth locking Quick, easy installation with 6-32 tapped mounting flanges Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack)

**Brand:** prime-line
**Price:** € 31.72
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in peace of mind with precision and style!

## Quick Answers

- **What is this?** Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack) by prime-line
- **How much does it cost?** € 31.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/24455007-prime-line-e-2121-mortise-lock-adjustable-spring-loaded-hook)

## Best For

- prime-line enthusiasts

## Why This Product

- Trusted prime-line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Engineering:** 3-11/16 inch mounting hole centers and square rear housing corners ensure a perfect fit every time.
- • **Modern Minimalist Design:** Round face and zinc finish blend seamlessly with contemporary door aesthetics—security that complements your style.
- • **Effortless Security Upgrade:** Replace old locks without swapping your entire door—smart, sustainable, and sleek.
- • **Weather-Resistant Durability:** Built with aluminum, alloy steel, and zinc to withstand the elements and keep your home secure year-round.
- • **Universal Sliding Door Compatibility:** Fits wood, aluminum, vinyl, and W&F handle sliding patio doors—versatility that matches your lifestyle.

## Overview

The Prime-Line E 2121 Mortise Lock is a weather-resistant, adjustable spring-loaded lock designed specifically for sliding patio doors made of wood, aluminum, or vinyl. Featuring a 45-degree angled keyway and precise 3-11/16 inch mounting hole centers, it offers easy installation and reliable security with a sleek, modern zinc finish.

## Description

Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack)

## Features

- REPLACE OLD OR BROKEN DOOR LOCKS – When your sliding door mortise lock is broken or old, don’t replace the door entirely, just get a new Prime-Line E 2121 Mortise Lock!
- FOR SLIDING DOORS – This Mortise Lock can be used on sliding patio doors constructed of wood, aluminum and vinyl. Also fits doors using W&F manufactured handles.
- EASY INSTALLATION – Installation is quick and easy – working sliding door locks are well within reach. Mounting Flanges have 6-32 tapped thread.
- 45 DEGREE KEYWAY - This E 2121 mortise lock has a 45-degree angled keyway position when in the locked position.
- PRODUCT INFO - The mounting hole centers of this lock measures 3-11/16” from center to center, and the rear housing corners are square. Mortise lock dimensions are: 1.125 inch(D)x0.5 inch(W)x3.688 inch(H).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | PRIME-LINE |
| Special Feature | Weather Resistant |
| Lock Type | Rim Lock |
| Item dimensions L x W x H | 0.5 x 1.13 x 3.69 inches |
| Material | Aluminum, Alloy Steel, Zinc |
| Recommended Uses For Product | sliding patio doors |
| Style | Modern |
| Color | Zinc |
| Number of Pieces | 1 |
| Included Components | Mortise Lock |
| Controller Type | Mechanical knob |
| Shape | Round |
| Item Weight | 4.48 ounces |
| Control Method | Touch |
| UPC | 049793021212 |
| Model Name | Mortise Lock |
| Global Trade Identification Number | 00049793021212 |
| Manufacturer | Prime-Line Products |
| Part Number | E 2121 |
| Item Weight | 4.5 ounces |
| Product Dimensions | 0.5 x 1.13 x 3.69 inches |
| Item model number | E 2121 |
| Size | 3-11/16 in. |
| Item Package Quantity | 1 |
| Special Features | Weather Resistant |
| 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. |

## Product Details

- **Brand:** PRIME-LINE
- **Special Feature:** Weather Resistant
- **Lock Type:** Rim Lock
- **Item dimensions L x W x H:** 0.5 x 1.13 x 3.69 inches
- **Material:** Aluminum, Alloy Steel, Zinc

## Images

![Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack) - Image 1](https://m.media-amazon.com/images/I/51xP14VuUyL.jpg)
![Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack) - Image 2](https://m.media-amazon.com/images/I/516KGkG1BpL.jpg)
![Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack) - Image 3](https://m.media-amazon.com/images/I/61VgU3qedTL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ works good.Great quality.
*by J***H on May 14, 2025*

worked great

### ⭐⭐⭐⭐⭐ Awesome Product!
*by D***N on June 16, 2023*

Called a locksmith to repair broken lock on my sliding glass door. He said they are mega hard to repair. Have to find the exact brand and original company to match it up.Then Found on a Google Search a guy who said its EZ and explained how to match up measurements and see if you have a straight or 45° angle to pick the right lock. This one, a 45° one, is the most common one.Dirt cheap. EZ to install. That locksmith is a dummy! Easy DIY project! Highly recommend.

### ⭐⭐⭐⭐ Doesn’t feel sturdy
*by C***7 on July 11, 2022*

We are using it but it's not very good. When you unlock it the leaver doesn't seat back in it ever. We had a hard time latching it we had to move the door back and forth to get the lock engaged. We are using it because the 1 we had was completely broken. I don't know if we just got a bad 1 or if they just aren't made well. I am a former lock smith so yes it was installed properly

## Frequently Bought Together

- Prime-Line E 2121 Mortise Lock - Adjustable, Spring-Loaded Hook Latch Projection for Sliding Patio Doors, 3-11/16 in., 45 Degree Keyway, Round Face (Single Pack)
- Prime-Line E 2014 Stainless Steel Mortise Lock for Patio Sliding Doors Constructed of Wood, Aluminum, and Vinyl, 3-11/16 Inch, 45 Degree Keyway, Silver, Set of 1
- Prime-Line E 2199 Stainless Steel Mortise Lock - Adjustable, Spring-Loaded Hook Latch for Sliding Patio Doors Made of Wood, Aluminum & Vinyl, 3-11/16”, 45 Degree Keyway, Round Face (Single Pack)

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**Shop now:** [https://www.desertcart.it/products/24455007-prime-line-e-2121-mortise-lock-adjustable-spring-loaded-hook](https://www.desertcart.it/products/24455007-prime-line-e-2121-mortise-lock-adjustable-spring-loaded-hook)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-26*