---
product_id: 23381384
title: "Prime-Line U 9919 White, Sliding Patio Door Keyed with Bolt Lock (Single Pack)"
brand: "prime-line"
price: "$53.17"
currency: USD
in_stock: true
reviews_count: 11
category: "Prime Line"
url: https://www.desertcart.us/products/23381384-prime-line-u-9919-white-sliding-patio-door-keyed-bolt
store_origin: US
region: United States of America
---

# Multi-use: patio, shed, utility doors 5/16 inch diameter keyed bolt Surface mount, easy install Prime-Line U 9919 White, Sliding Patio Door Keyed with Bolt Lock (Single Pack)

**Brand:** prime-line
**Price:** $53.17
**Availability:** ✅ In Stock

## Summary

> 🔒 Lock in security, unlock peace of mind.

## Quick Answers

- **What is this?** Prime-Line U 9919 White, Sliding Patio Door Keyed with Bolt Lock (Single Pack) by prime-line
- **How much does it cost?** $53.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/23381384-prime-line-u-9919-white-sliding-patio-door-keyed-bolt)

## 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

- • **Versatile Protection:** Perfect for sliding patio doors, sheds, and utility doors—one lock, multiple uses.
- • **Discreet Yet Powerful:** Sleek white finish blends seamlessly with modern door frames without compromising strength.
- • **Effortless Installation:** Surface mount design with clear instructions lets you secure your space in minutes.
- • **Peace of Mind for Families:** Keyed bolt lock prevents forced entry and keeps curious kids safe from restricted areas.
- • **Robust Security, Minimal Fuss:** Diecast steel construction ensures durability and long-lasting protection.

## Overview

The Prime-Line U 9919 is a white, diecast steel keyed bolt lock designed for sliding patio doors, sheds, and utility doors. Featuring a 5/16 inch diameter bolt with a 1.5-inch throw, it mounts easily on the surface and offers reliable protection against forced entry. Its sleek design and versatile use make it a top choice for enhancing home security with minimal installation effort.

## Description

This is a keyed bolt lock with a 5/16 inch diameter. It is a surface mounted patio door deadbolt lock that has a 1-1/2 inch long throw bolt that can be manually locked or key locked. Can be used on patio doors, sheds, and utility doors to help prevent a forced entry. May also be mounted in a ventilating position and keep the door secure.

Review: Simple & Clear Instruction at PrimeLine.net - Got the simple and clear instruction at PrimeLine.net. Used a pencil to mark the ceiling hole and drilled it first. Tried to open (down) and close (up) many times to ensure the smooth operation into the ceiling hole. Next marked the screws positions on the sliding door frame. Drilled the tiny holes on the sliding door frame at the marked positions. Then drove the actual screws to tighten the lock to the door frame. Besides the enhanced security, this can also prevent autistic and dementia people from eloping.
Review: Solidly built, great mechanism, useful for purposes other than sliding patio doors - I got this to secure a bi-fold door, which are not easy to secure unless you want an ugly 90-degree latch and a padlock. This solution is much more discrete and appealing looking. I added it to keep my 7 year old daughter out who is like a mouse, constantly stealing food from the pantry and nibbling it. We find wrappers behind and under all the furniture. No more. The pantry is now like a vault. This lock has a VERY long pin. I added door-stop side molding to further secure the door in locked position. Works GREAT!!

## Features

- Designed for sliding patio doors
- Helps protect against a forced entry
- Surface mount design
- Diecast construction painted white
- Can be used on shed and utility door

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000XPIGNA |
| Additional Features | Key Lock |
| Best Sellers Rank | #43,008 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #92 in Door Latches & Bolts |
| Brand Name | PRIME-LINE |
| Color | White |
| Control Method | Touch |
| Controller Type | Hand Control |
| Customer Reviews | 4.5 4.5 out of 5 stars (293) |
| Finish Types | White |
| Global Trade Identification Number | 00049793099198 |
| Included Components | Sliding Patio Door Keyed with Bolt Lock |
| Item Dimensions | 1 x 1.19 x 4.75 inches |
| Item Type Name | Sliding Patio Door Keyed with Bolt Lock |
| Item Weight | 0.6 Pounds |
| Lock Type | Key Lock |
| Manufacturer | Prime-Line Products (Home Improvement) |
| Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. |
| Material Type | Diecast/Steel |
| Model Number | U 9919 |
| Recommended Uses For Product | Security |
| Shape | D Shape |
| Style Name | Modern |
| UPC | 049793099198 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** PRIME-LINE
- **Item dimensions L x W x H:** 1 x 1.19 x 4.75 inches
- **Lock Type:** Key Lock
- **Material:** Diecast/Steel
- **Special Feature:** Key Lock

## Images

![Prime-Line U 9919 White, Sliding Patio Door Keyed with Bolt Lock (Single Pack) - Image 1](https://m.media-amazon.com/images/I/41voTrc+IbL.jpg)

## Questions & Answers

**Q: How does this fit into a sliding glass door. I use my sliding glass door like a front door. Can we lock / unlock this from the outside?**
A: No.  This lock is designed to attach to the inside edge of the sliding portion of the door.  It is not designed to attach to the facia of the door.

**Q: Need for dementia brother, Is it double sided deadbolt?**
A: No. It goes in the sliding glass door track. It would be quite difficult for a dementia patient to figure out how to use it even if it is not locked with the key. The bolt only goes down when you pull the lever below the lock and visa-versa. It will lock down the door even without using the key. The key is only if you want to be sure the lever cannot be pulled down. The only time I feel a need to lock the deadbolt is if I will be out of town.

**Q: hi i need to purchase a spare set identical to ones purchased recently**
A: I'm not sure what your question is but this product is great. Easy to install and locks up nice and tight.

**Q: Can this be used on an outside panel?  In other words, is the lock corrosion resistant?**
A: It is used on the outside of a patio door that is under cover not exposed to direct moisture. It is not rust resistant.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple & Clear Instruction at PrimeLine.net
*by R***R on January 1, 2026*

Got the simple and clear instruction at PrimeLine.net. Used a pencil to mark the ceiling hole and drilled it first. Tried to open (down) and close (up) many times to ensure the smooth operation into the ceiling hole. Next marked the screws positions on the sliding door frame. Drilled the tiny holes on the sliding door frame at the marked positions. Then drove the actual screws to tighten the lock to the door frame. Besides the enhanced security, this can also prevent autistic and dementia people from eloping.

### ⭐⭐⭐⭐⭐ Solidly built, great mechanism, useful for purposes other than sliding patio doors
*by D***K on January 15, 2023*

I got this to secure a bi-fold door, which are not easy to secure unless you want an ugly 90-degree latch and a padlock. This solution is much more discrete and appealing looking. I added it to keep my 7 year old daughter out who is like a mouse, constantly stealing food from the pantry and nibbling it. We find wrappers behind and under all the furniture. No more. The pantry is now like a vault. This lock has a VERY long pin. I added door-stop side molding to further secure the door in locked position. Works GREAT!!

### ⭐⭐⭐⭐⭐ Good deal
*by P***I on February 23, 2026*

Excellent quality and value

## Frequently Bought Together

- Prime-Line U 9919 White, Sliding Patio Door Keyed with Bolt Lock (Single Pack)
- Prime-Line U 9997 Aluminum, Sliding Patio Door Keyed with Bolt Lock (Single Pack)
- 10Pack Small Locks with Same Keys, 3/4" (20mm) Wide Lock Body Solid Brass Padlocks Keyed Alike, Mini Padlocks for Suitcases/Luggage/Backpacks/Tool Box/Diary Books/School lockers etc.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-17*