---
product_id: 56676602
title: "Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish"
brand: "sumnacon"
price: "₨12442"
currency: LKR
in_stock: true
reviews_count: 13
category: "Sumnacon"
url: https://www.desertcart.lk/products/56676602-sumnacon-2pcs-door-flush-bolts-8-inch-concealed-security-door
store_origin: LK
region: Sri Lanka
---

# 8-inch flush bolt length automatic holding spring tension solid stainless steel build Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish

**Brand:** sumnacon
**Price:** ₨12442
**Availability:** ✅ In Stock

## Summary

> 🔐 Elevate your door security with sleek, stainless steel precision!

## Quick Answers

- **What is this?** Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish by sumnacon
- **How much does it cost?** ₨12442 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/56676602-sumnacon-2pcs-door-flush-bolts-8-inch-concealed-security-door)

## Best For

- sumnacon enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from heavy-duty stainless steel, ensuring rustproof durability and long-term reliability in any environment.
- • **Effortless Operation:** Innovative lever switch with automatic holding spring offers smooth, tensioned locking without the push-slide hassle.
- • **Versatile Compatibility:** Perfectly engineered for French, composite, wood, double, and dummy doors—top and bottom installation for maximum safety.
- • **Hassle-Free Installation:** Includes rust-proof screws and strikes with clear instructions, making professional-grade security accessible to every DIY enthusiast.
- • **Seamless Security Integration:** Concealed flush bolt design blends perfectly with modern door aesthetics for a sleek, professional look.

## Overview

The Sumnacon 2Pcs Door Flush Bolts are 8-inch concealed locks designed for French, composite, wood, and double doors. Made from solid stainless steel, they provide rustproof, heavy-duty security with an automatic holding spring for smooth operation. Ideal for securing inactive or dummy doors, these flush bolts feature a modern lever switch for easy use and come with all necessary screws and strikes for straightforward installation.

## Description

Flush bolt is great especially to jamb on French, patio, wood, double or other composite doors, offers concealed locking for dummy doors and inactive doors.Constructed from solid material, it's sturdy and reliable enough for residential daily using.This mechanism comes with reasonable interior design, do not worry about felling apart suddenly when using.With comfortable touching and concealed style, it will surely offer you enjoyable usage and perfectly finished to complement your decor. Recommend to purchase two for top and bottom of the door.Specification: Material: Stainless Steel Color: Silver Size: Length=8"(20cm), Width=0.79"(2cm), Depth = 0.67"(1.7cm) Available for: Composite ,French, Dummy DoorsPackage Included: 2 x 8 Inch Door Flush Bolts8 x Screws 2 x Strikes Installation Instruction: 1. Figure out where to install the flush bolt(usually on inactive leaf of double door opening) and drill grooves. 2. Install the flush bolt on the door leaf and tighten each screw. 3. Line up strikes on the door frame or on the floor and drill holes, then tighten each screw. 4. Close the door, put the pin into the hole, done.

Review: Very Good Quality Product - The bolts themselves were good quality, it just took a lot of effort to get them to fit in the spot needed (door's fault, not the product). I measured what I needed and this was the closest to the fit that I could find. If anyone is planning on replacing your flush bolts, get the closest size to fit you can find and plan on a lot of grinding to make it fit. In the end, they work well and look good. Even with the extra work, it was still better than spending hundreds of $$$ on replacing the Astragal.
Review: These are brilliant!!! - I have 2 pairs of 10-14 year old French doors on the back of the home I just purchased. The cheap friction based plastic slides had cracked/failed and otherwise looked like they were on their last leg from years of brutal Florida sun and the pins were rusting from the salt air. These stainless steel assemblies effectively were direct replacements although they install differently then the originals. The originals that were still intact required the dooe be removed to get them to slide out, otherwise they stopped at the floor. These go in from the side and can be installed with the door in situ. The units were ever so slightly thicker and were sitting a little proud of the door frame. A little sanding/tweaking was needed on the tighter door set. The other set fit just fine. I needed to drill larger pin holes as these are a bigger diameter. Once installed, they look great, work even better and was so glad they were dimensionally near perfect in most respects. 2 mm less deep and I wouldn't have had one issue. Highly recommend.

## Features

- Flush bolt can be used to secure the opening for composite door, French, patio, wood, double or other doors. This great small device features automatic holding spring to provide tension for both retracted and projected positions. It often be installed on inactive leaf of double door opening (top and bottom) to offer safety function.
- Our flush bolts are all machined from solid stainless steel for anti corrosive and rustproof, heavy duty and sturdy. Installing a flush bolt to make a nice addition to security of your home.
- Size : Length=8"(20cm), Width=0.79"(2cm), Depth = 0.67"(1.7cm). The interior part of the flush bolt is reinforced by screws to enhance stability and fluency of the structure. Install on inactive leaf of double door opening.
- Integrated design of the switch is easy for daily use, Say goodbye to the one with "push just ride and slide" type, this lever type with comfortable touching and concealed style will surely offer you enjoyable usage and match your modern decoration.
- Easy to install,comes with rust-proof screws and surface strikes for installation. Constructed from stainless steel, screws will provide extra strength to engage and interlock firmly so as to be immobile.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0773JN2H2 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #24,679 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #59 in Door Latches & Bolts |
| Brand | Sumnacon |
| Color | Silver |
| Control Method | Touch |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,335) |
| Date First Available | November 2, 2017 |
| Finish | stainless steel finish |
| Finish Type | stainless steel finish |
| Included Components | 2 x 8 Inch Door Flush Bolts, 8 x Screws, 2 x Strikes |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 9.6 ounces |
| Item model number | ULSMC01024 |
| Lock Type | Flush Bolts |
| Manufacturer | Sumnacon |
| Material | Stainless Steel |
| Number of Pieces | 2 |
| Package Dimensions | 8.15 x 1.57 x 0.94 inches |
| Part Number | ULSMC01024 |
| Recommended Uses For Product | Securing French doors, patio doors, wood doors, and double doors; concealed locking for dummy doors and inactive doors |
| Shape | Rectangular |
| Size | 8 Inch |
| Special Feature | Rustproof |
| Special Features | Rustproof |
| Style | French |
| UPC | 736140224319 |

## Product Details

- **Brand:** Sumnacon
- **Lock Type:** Flush Bolts
- **Material:** Stainless Steel
- **Special Feature:** Rustproof

## Images

![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 1](https://m.media-amazon.com/images/I/61+A1sJwAgL.jpg)

## Available Options

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

## Questions & Answers

**Q: Can this be installed in the active door of a steel french door?**
A: Yes, that's how I installed mine.

**Q: How does one even install these?**
A: I made a jig with plywood, then pin-nailed it to the doors edge. Set the depth and go at it. Last, clean up the corners with a chisel. Now you’re ready to install the locking mechanism.

**Q: Is the bolt stainless steel as well? screws? are all components stainless and suitable for outdoor use?**
A: Appears to be stainless steel.

**Q: Is this marine grade stainless steel for use on the coast?**
A: Cheap Chinese stainless steel. But for the price it should work

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very Good Quality Product
*by B***D on December 9, 2025*

The bolts themselves were good quality, it just took a lot of effort to get them to fit in the spot needed (door's fault, not the product). I measured what I needed and this was the closest to the fit that I could find. If anyone is planning on replacing your flush bolts, get the closest size to fit you can find and plan on a lot of grinding to make it fit. In the end, they work well and look good. Even with the extra work, it was still better than spending hundreds of $$$ on replacing the Astragal.

### ⭐⭐⭐⭐⭐ These are brilliant!!!
*by H***T on February 19, 2020*

I have 2 pairs of 10-14 year old French doors on the back of the home I just purchased. The cheap friction based plastic slides had cracked/failed and otherwise looked like they were on their last leg from years of brutal Florida sun and the pins were rusting from the salt air. These stainless steel assemblies effectively were direct replacements although they install differently then the originals. The originals that were still intact required the dooe be removed to get them to slide out, otherwise they stopped at the floor. These go in from the side and can be installed with the door in situ. The units were ever so slightly thicker and were sitting a little proud of the door frame. A little sanding/tweaking was needed on the tighter door set. The other set fit just fine. I needed to drill larger pin holes as these are a bigger diameter. Once installed, they look great, work even better and was so glad they were dimensionally near perfect in most respects. 2 mm less deep and I wouldn't have had one issue. Highly recommend.

### ⭐⭐⭐⭐⭐ Better than other(s)
*by G***G on September 4, 2025*

My use case: Front double door, normally closed half, top & bottom. Prior device was notched into door, very flimsy, expected to be one finger pushed up/down. This control, flip out and across, is much less prone to getting stuck in place. The thickness of the metal parts is about the same. Not too flimsy, not Swiss strong. 5 for ease of installation, decent price, looks nice. Shorter by 30% of the device that was there before, used wood filler to backfill the gap. The prior one was probalby not cheap and this was a screw in replacement. Screws were shorter by half with this vs old (easier screw-in, probably not as strong).

## Frequently Bought Together

- Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish
- Ceoighe 2 Pack Flush Bolt for Double Door, 7 Inch Heavy Duty Chrome Plating Flush Latch Bolts, French Door Lock for Inactive Leaf, Double Door Opening and Composite Wood Double Dummy Door

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-06*