The best French door locking system depends on whether you need to secure the inactive door panel or reinforce both doors from the handles. Flush bolts are designed to hold an inactive leaf in place, while adjustable barricade-style locks fit around paired handles. The 7-inch satin-nickel flush bolt is best for a concealed, measured replacement; the adjustable steel barricade is better for buyers seeking an added barrier at the handles. Compare door swing, handle shape, finish, and installation dimensions before choosing.
| Product | Best For | Key Consideration |
|---|---|---|
| 7-inch black flush bolts, 2-pack | Securing an inactive door leaf | Requires installation on the door |
| 7-inch copper flush bolts, 2-pack | Matching a copper finish | Requires installation on the door |
| Adjustable hardened-steel barricade | Handle-level reinforcement | Check handle spacing and door swing |
| Keyed all-metal door lock | Handle-level locking with a key | Check handle shape compatibility |
| 7-inch satin-nickel flush bolt | Replacing a measured flush bolt | Check screw-hole spacing |
Ceoighe 7-Inch Black Flush Bolts
This two-pack of 7-inch flush bolts is best for homeowners securing the inactive leaf of a French or other double door. The product listing describes solid brass construction with a black-plated finish and use on composite, patio, wood, and French doors. It is selected for buyers who want a pair of bolts and a dark finish.
The listing recommends installing bolts at both the top and bottom of the door for added stability. This is a surface-bolt approach, so it requires installation rather than simply fitting over existing handles. Check the door and hardware layout before buying to confirm the bolts can be mounted in the intended locations.
Ceoighe 7-Inch Copper Flush Bolts
This two-pack is best for buyers who need to secure an inactive door leaf and prefer a copper-plated appearance. Its listed features include solid brass construction, a 7-inch length, and installation on double doors including French, patio, composite, and wood doors. It is a finish alternative to the black version, with similar stated uses.
The listing advises using two bolts, one near the top and one near the bottom, for greater stability. Measure the available mounting area and consider how the copper finish will look alongside existing door hardware. Choose another style if you need a removable handle-level barricade instead of an installed flush bolt.
MOSECYOU Adjustable Steel Barricade Lock
This adjustable lock is best for buyers who want an added barrier around paired door handles. The listing describes hardened-steel construction and a sliding bar that adjusts to different handle spacings. It is stated to fit standard French double doors with round knobs or lever handles and to work with inswing and outswing doors.
Unlike a flush bolt, this device is positioned at the handles, so it may suit buyers focused on limiting handle manipulation. Confirm the spacing and handle style before selecting it. The listed compatibility covers round knobs and lever handles; it does not specify compatibility with every handle shape or door setup.
Keyed All-Metal French Door Lock
This handle-level locking device is best for buyers looking for a keyed extra lock for double doors. Its listing specifies die-cast aluminum alloy construction and an adjustable sliding bar for different handle spacings. It is described for inswing and outswing doors with round knobs or straight lever handles.
Check handle shape carefully: the listing calls out inward-curving handles as a compatibility point and directs buyers to the product images for reference. This lock is not described as a flush bolt, so choose it for handle-level reinforcement rather than securing the inactive leaf with a concealed latch.
MOSECYOU 7-Inch Satin-Nickel Flush Bolt
This flush bolt is best for replacing a compatible 7-inch bolt or securing the inactive leaf of a French double door. The listing gives its dimensions as 7 inches long, 3/4 inch wide, and 5/8 inch thick. It has a sliding mechanism and is intended for installation at the top or bottom of the inactive leaf.
It is selected for buyers who can check measurements before ordering. The listed replacement screw-hole spacing is 4-1/2 inches; other spacing may require drilling new holes. Measure the existing hardware rather than assuming that a 7-inch length alone guarantees a direct fit.
Buying Guide: How To Choose A French Door Lock
Do you need a flush bolt or a handle lock?
A flush bolt secures the inactive leaf of a pair of doors by sliding into a receiving point. It is suited to installations where one door stays fixed while the other is used. An adjustable barricade-style lock fits at the handles and offers a separate locking point. These product types serve different purposes, so choose according to the part of the door you need to secure.
What should you measure before ordering?
- For a flush bolt, check its length, width, thickness, available mounting area, and existing screw-hole spacing.
- For an adjustable handle lock, measure the distance between handles and verify the handle shape is listed as compatible.
- Check whether the doors swing inward or outward, especially when choosing a handle-level device.
Which finish or material should you consider?
Match the finish to nearby hardware if appearance matters: the listed options include black, copper, and satin nickel. The two Ceoighe products are described as solid brass with plated finishes. The barricade listings describe hardened steel or die-cast aluminum alloy. Compare the stated material and installation style rather than treating finish as a measure of security.
Frequently Asked Questions
Where does a French door flush bolt go?
A flush bolt is installed on the inactive leaf, commonly near the top or bottom, to hold that door panel in place.
Should I install one or two flush bolts?
The Ceoighe listings recommend two bolts, positioned at the top and bottom, for added stability. Follow the product instructions and confirm the door supports the installation.
Will an adjustable lock fit every French door handle?
No. The listed models specify certain handle styles and adjustable spacing. Check the product’s compatibility details against your handles before choosing.
Can a 7-inch flush bolt replace any 7-inch bolt?
Not necessarily. The MOSECYOU listing specifies 4-1/2-inch screw-hole spacing for direct replacement and notes that other spacing may require new holes.