Can this be installed in the active door of a steel french door?

Yes, that's how I installed mine.

How does one even install these?

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.

Is this marine grade stainless steel for use on the coast?

Cheap Chinese stainless steel. But for the price it should work

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Sumnacon 2 Pcs Door Flush Bolts 6 Inch Flush Bolt for Double Door,Black | Concealed Security Door Locks for French Doors,Composite ,Wood ,Double ,Dummy Doors,Brush Stainless Steel Finish

Sumnacon 2 Pcs Door Flush Bolts 6 Inch Flush Bolt for Double Door,Black | Concealed Security Door Locks for French Doors,Composite ,Wood ,Double ,Dummy Doors,Brush Stainless Steel Finish

Product ID: 140819298

Details

Brand
Sumnacon
Lock Type
Deadbolt
Material
Metal Steel
Recommended Uses For Product
Residential
Special Feature
Automatic

🔒6-inch heavy-duty stainless steel

⚙️Automatic holding spring tension

🛠️Easy concealed lever switch

121.27 DT

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Description

🔐 Elevate your door security with sleek, stealthy strength!

DUAL POINT SECURITY - Recommended top and bottom installation for maximum door stability.
SLEEK CONCEALED STYLE - Modern black brushed finish blends seamlessly with upscale interiors.
COMPLETE INSTALLATION KIT - Includes rust-proof screws and strikes for quick, hassle-free setup.
EFFORTLESS LEVER OPERATION - Integrated switch design ensures smooth, comfortable locking every time.
SOLID STAINLESS STEEL STRENGTH - Rustproof, corrosion-resistant build for lasting security.

The Sumnacon 2 Pcs 6-Inch Door Flush Bolts offer robust, corrosion-resistant locking for double and dummy doors. Featuring an automatic holding spring and a smooth lever switch, these flush bolts provide reliable, concealed security with a modern black brushed finish. Designed for easy installation with included hardware, they enhance both safety and style for residential French, composite, wood, and patio doors.

Specifications

ASIN	B07Q349BFJ
Additional Features	Automatic Holding Spring, Integrated Switch Design, Concealed Style
Best Sellers Rank	#31,456 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #77 in Door Latches & Bolts
Brand Name	Sumnacon
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (1,348)
Finish Types	Brushed
Included Components	Screws, Strikes, Installation Instructions
Lock Type	Deadbolt
Manufacturer	Sumnacon
Manufacturer Part Number	ULSMC00317
Material Type	Metal, Stainless Steel, Wood
Model Number	ULSMC00317
Number of Items	2
Number of Pieces	2
Recommended Uses For Product	Residential Doors
Style Name	Modern
Unit Count	2 Count

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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121.27 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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