The best flush bolt for a double door depends on the inactive door leaf, available installation space, and finish you want. The two-pack 7-inch Ceoighe bolts are suited to common wood, French, patio, and composite doors; the 6-inch NUK3Y model is a shorter option; and the 12-inch lever-extension set is intended for certain hollow-metal door applications. Compare dimensions and installation requirements before choosing.
| Product | Best For | Key Difference |
|---|---|---|
| Ceoighe 7-inch, black, 2-pack | Dark-finish double doors | Two bolts; solid brass |
| Ceoighe 7-inch, satin nickel, 2-pack | Cool-toned hardware | Two bolts; brushed finish |
| NUK3Y 6-inch, satin nickel | A shorter bolt option | 6-inch length; 1-inch extension |
| 12-inch lever-extension, 2-pack | Specified hollow-metal doors | Lever operation and 12-inch rod |
| Ceoighe 7-inch, copper, 2-pack | Warm-toned hardware | Two bolts; copper-plated finish |
Ceoighe 7-Inch Black Flush Bolt, 2-Pack
This pair is best for buyers who need two bolts for an inactive door leaf and want black hardware. The listed construction is heavy-duty solid brass with a black-plated finish described as corrosion- and rust-resistant. The bolts are 7 inches long, and the listing says the internal part is reinforced with screws.
The product is listed for composite, French, patio, wood, and other double-door applications. Its two-piece quantity suits installations using a bolt near the top and another near the bottom, an arrangement the seller recommends for stability. Choose this option when the length and black finish match your door hardware. Caution: Confirm that the door can accommodate a 7-inch bolt and its installation depth before ordering.
Ceoighe 7-Inch Satin Nickel Flush Bolts
This 2-pack is best for double doors with brushed satin nickel hardware. Like the black version, it is described as solid brass with a plated finish intended to resist corrosion and rust. Each bolt measures 7 inches, and the listing identifies wood, composite, French, and patio doors among possible applications.
It is a direct finish alternative to the black Ceoighe set, with the same listed length and two-bolt quantity. Select it if you want a coordinated nickel appearance and need hardware for the inactive leaf. The seller recommends fitting bolts at both the top and bottom for added stability. Caution: The product information does not specify a door-thickness range, so check the installation dimensions against your door.
NUK3Y 6-Inch Satin Nickel Flush Bolt
The NUK3Y bolt is best for buyers seeking a shorter 6-inch option for an inactive leaf or double-door opening. Its listed overall size is three-quarters of an inch by 6 inches, with a 1-inch bolt extension. The product is made of solid brass and is described as available in round or square corner styles; confirm which version is being offered before purchase.
Compared with the 7-inch two-packs, this option has a shorter listed length and is not identified as a two-pack in the provided product details. It may suit a project where the specified dimensions fit the door and frame. Caution: The listing information does not establish that this bolt includes two units, so check package contents if you need top-and-bottom hardware.
12-Inch Lever-Extension Flush Bolt Set
This brass two-pack is best for buyers whose application matches the listed hollow-metal door description and who want lever-operated retraction. The kit includes two latch sets, mounting screws, and accessory plates. Each main plate measures 1 inch wide by 6-3/4 inches high, and each latch rod is 12 inches long.
The product description mentions compact left- or right-swinging single hollow-metal fire doors and lightweight small double fire doors, particularly where vertical installation space is limited. The lever is intended to extend or retract the latch with a light movement. Choose it based on the stated door type and dimensions, not simply because it has a long rod. Caution: The provided details do not establish any fire-rating certification or approval; verify all requirements with the door manufacturer or relevant authority.
Ceoighe 7-Inch Copper Flush Bolts, 2-Pack
This pair is best for buyers coordinating double-door hardware with a copper-plated finish. The listing describes heavy-duty solid brass construction and a finish intended to resist corrosion and rust. The 7-inch bolts are listed for inactive leaves and double-door openings, including wood, composite, French, and patio doors.
Its dimensions and quantity make it comparable to the black and satin nickel Ceoighe options; the principal listed difference is the finish. The seller recommends using two bolts, one near each end of the door, to improve stability. Caution: Finish appearance can vary by product and surrounding hardware, so compare the finish details before selecting a matching set.
Buying Guide: How To Choose A Double-Door Flush Bolt
What length and extension do you need?
Check the bolt length, extension, plate size, and required door-edge or frame preparation. The products here include 6-inch and 7-inch bolts, plus a 12-inch latch rod with a 6-3/4-inch-high plate. These measurements describe different parts of the hardware, so do not treat them as interchangeable. Compare the product dimensions with the door and frame before buying.
Should you buy one bolt or a pair?
A two-pack can supply hardware for the top and bottom of an inactive leaf. One bolt may not provide the same arrangement. Confirm the package quantity and determine whether your project needs one or two locking points. Follow the door or hardware manufacturer’s installation instructions.
Which finish should you choose?
Black, brushed satin nickel, and copper-plated finishes are available among these options. Choose based on nearby hinges, handles, and other visible hardware. Finish is mainly a coordination choice; it does not determine whether the bolt’s dimensions fit the door.
What should you check for specialized doors?
Match the product’s stated use to your door material, swing, and construction. For hollow-metal or fire-door applications, verify dimensions and any required approvals with the door manufacturer or relevant authority. Do not assume that a product description alone confirms code compliance or fire-rating suitability.
Frequently Asked Questions
Where does a flush bolt go on a double door?
It is commonly installed on the inactive leaf to hold that door in place. Some installations use one bolt near the top and another near the bottom.
Are 6-inch and 7-inch flush bolts interchangeable?
Not necessarily. Their lengths differ, and fit depends on the door, frame, bolt extension, and installation dimensions.
Can a flush bolt be used on a French door?
The 7-inch Ceoighe listings identify French doors as a possible application. Confirm that the bolt dimensions suit your specific door.
Does a two-pack include hardware for both ends?
The listed Ceoighe products are two-packs. Check each product’s package details and installation requirements to confirm what hardware is included.
Is the lever-extension set certified for fire doors?
The supplied product details do not confirm certification. Verify fire-door requirements with the manufacturer or appropriate authority before installation.