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Flush Bolts for Double, French & Commercial Doors
Flush bolts provide a concealed way to hold the inactive leaf of a compatible double-door opening in place while allowing the active door to operate normally. Unlike a surface bolt mounted across the face of the door, a flush bolt is recessed into the door edge, helping maintain a cleaner appearance when the doors are closed. Depending on the product, the bolt may be operated manually or automatically as part of a paired-door system.
Coastal Hardware Store carries flush bolts from Deltana, Emtek, Baldwin Estate, and Ives. The current assortment includes manual flush bolts in several lengths and corner styles, a longer-rod Baldwin configuration, stainless-steel and solid-brass options on selected products, and an automatic Ives system for metal doors. Because dimensions, door materials, rod lengths, operation, and installation requirements vary substantially, review the specifications for the exact product before ordering. For hardware that mounts to the face of the door instead, browse our surface bolts.
Why Choose a Flush Bolt?
A flush bolt is a practical choice when one leaf of a paired-door opening normally remains stationary but still needs to be released when the full opening is required. The correct model depends on the door construction, preparation, operation type, required bolt location, and surrounding hardware.
- Holds the inactive door leaf: Flush bolts help keep the normally stationary panel of a compatible double or French door in its closed position.
- Concealed installation: Most of the mechanism is recessed into the door edge rather than remaining prominently visible on the door face.
- Manual and automatic options: The current collection includes conventional manually operated bolts as well as an Ives automatic top-and-bottom system for metal doors.
- Multiple corner preparations: Current Emtek and Deltana products include square-corner and rounded-corner configurations for different existing mortises.
- Several sizes and rod configurations: The assortment includes compact manual bolts as well as products that use longer extension rods for specialized door preparation.
- Finish coordination: Available finishes can be compared with nearby hinges, knobs, levers, handlesets, and other visible door hardware.
Types of Flush Bolts Available
Manual Flush Bolts
Manual flush bolts are operated directly by the user when the inactive door needs to be secured or released. Current Emtek, Deltana, and Baldwin Estate products represent this general type. Manual hardware is commonly used on compatible French doors and other paired openings where the inactive leaf only needs to be opened occasionally. The bolt body, throw, rod configuration, and strike arrangement vary by model.
Round-Corner & Square-Corner Flush Bolts
Corner shape matters because the flush bolt faceplate must fit the mortise in the edge of the door. Current Emtek listings include both square-corner and 5/8-inch radius-corner models, while current Deltana products include square- and round-corner designs. A square-corner bolt should not automatically be treated as a direct replacement for a radius-corner model—or vice versa—without checking the existing preparation.
4-Inch, 6-Inch & 7-Inch Flush Bolts
The current collection includes manual flush bolts identified in 4-inch, 6-inch, and 7-inch sizes. Emtek currently contributes 4-inch and 6-inch models, while Deltana products include 4-inch, 6-inch, and 7-inch configurations. The listed dimension should be compared with the complete technical drawing because bolt throw, faceplate width, corner shape, screw positions, and strike dimensions are separate measurements.
Extension & Long-Rod Flush Bolts
Baldwin Estate's current assortment includes the 0600 Flush Bolt with a 12-inch rod. This style should not be confused with a simple 12-inch faceplate measurement: the extension-rod dimension is part of the operating assembly. Baldwin identifies the 0600 as a template-prepared flush bolt suitable for its specified installation, including applications involving metal door frames. Compare the complete preparation before substituting it for a compact manual bolt.
Automatic Flush Bolts
The current collection includes an Ives commercial pair of automatic flush bolts for metal doors. Ives' automatic system is designed so the inactive-door bolts extend when the active leaf closes and retract when the active leaf opens. Automatic flush bolts use specialized door preparation and should be selected according to the door material, paired-door hardware arrangement, and any applicable project requirements rather than treated as interchangeable with a simple manual bolt.
How to Choose the Right Flush Bolt
Begin with the door construction and existing preparation, then determine the required operating method, bolt dimensions, corner style, finish, and strike location. Small dimensional differences can determine whether a flush bolt fits the door correctly.
- Identify the active and inactive leaves: Determine which door normally operates and which panel needs to remain secured until the full opening is required.
- Choose manual or automatic operation: Manual bolts are operated by hand, while an automatic system uses the movement of the paired doors to control the bolts. The door must be prepared for the selected system.
- Verify the door material: Wood and metal doors can require different flush-bolt designs and preparation. The current Ives automatic product, for example, is specifically identified for metal doors.
- Match the existing mortise: Compare the faceplate length and width, corner shape, mortise depth, screw locations, bolt throw, rod configuration, and strike dimensions.
- Determine top and bottom requirements: Some inactive leaves use flush bolts at both the head and sill, while other door systems use a different arrangement. Follow the door and hardware specifications for the complete opening.
- Verify special project requirements: If the opening requires a particular fire listing, ANSI/BHMA designation, commercial specification, or other documented standard, confirm that requirement on the exact flush-bolt model rather than applying it to the collection generally.
Materials, Styles & Finishes
Material construction varies across this collection. Deltana documents solid-brass flush bolts and the current Coastal Hardware Store assortment also includes a Deltana stainless-steel model. Baldwin officially identifies its 0626 residential 6-inch flush bolt as solid brass. Other products and internal components should be reviewed individually rather than assigning one material to the entire collection.
Because flush bolts are largely recessed into the door edge, their design is generally more functional and understated than a visible knob, lever, or handleset. Important visual differences include faceplate proportions, corner shape, operating lever design, and the portion of the hardware that remains visible when the door is open.
Current collection filters include Antique Brass, Antique Nickel, Brushed Brass, Brushed Chrome, Brushed Nickel, Brushed Stainless, Flat Black, French Antique, Lifetime Polished Brass, Lifetime Polished Nickel, Lifetime Satin Brass, Lifetime Satin Nickel, Medium Bronze Patina, Oil Rubbed Bronze, Paint Black, Polished Brass, Polished Chrome, Polished Nickel, Satin Black, Satin Brass, Satin Nickel, Satin Stainless Steel, Tumbled White Bronze, Unlacquered Brass, Venetian Bronze, Vintage Brass, and additional product-specific choices.
Finish names and appearance vary by manufacturer. Two products with similar brass, nickel, bronze, or black finish names may not match exactly in color, sheen, texture, or aging characteristics. Living and unlacquered finishes can also change over time, so use the exact manufacturer finish when coordinating flush bolts with nearby hardware.
Featured Flush Bolt Brands
The current collection includes Deltana, Emtek, Baldwin Estate, and Ives, with each brand serving somewhat different applications. Product specifications, materials, finish availability, installation requirements, and warranties vary by manufacturer.
- Deltana: Deltana currently represents the largest group in the collection, with 4-inch, 6-inch, and 7-inch manual flush bolts. The assortment includes round- and square-corner configurations as well as a separate stainless-steel 6-inch model.
- Emtek: Current Emtek options include 4-inch and 6-inch manual flush bolts in square-corner and 5/8-inch radius-corner configurations. Emtek states that its flush bolts are sold as complete sets with screws and a strike plate.
- Baldwin Estate: The current collection includes Baldwin's 0626 6-inch residential flush bolt and the 0600 flush bolt with a 12-inch rod, giving shoppers both compact and extension-style configurations.
- Ives: Ives contributes the current collection's automatic commercial option—a paired top-and-bottom flush-bolt system identified for metal doors and designed to operate with the active leaf.
Installation & Compatibility
Flush bolts are mortised hardware, so accurate preparation is essential. Before cutting or drilling, use the dimensional drawing or template for the exact product and confirm the faceplate, body, rod, bolt throw, screw positions, and strike location. Do not prepare a door from the collection name or nominal bolt length alone.
For manual flush bolts, the bolt must align cleanly with its strike or receiver at the head, sill, floor, or other specified location. Misalignment can make the bolt difficult to operate or prevent the inactive leaf from seating correctly. The door should be properly hung and aligned before the final receiver location is established.
Replacement projects require careful comparison of corner shape as well as overall size. The current collection includes square, round, and 5/8-inch radius preparations. Even two products with the same nominal length may use different faceplate widths, corner geometry, bolt throws, or screw patterns.
Automatic flush bolts require their own templates and coordinated paired-door preparation. The current Ives automatic pair is identified for metal doors, and manufacturer documentation specifies its operation and installation requirements separately from manual hardware. For fire-rated, institutional, commercial, or other regulated openings, confirm the exact door, frame, coordinator, latch, and flush-bolt requirements before ordering or modifying the opening.
Shipping & Warranty Information
- Shipping: Coastal Hardware Store's current shipping policy states that Quick Ship products usually leave the warehouse in 2-3 business days, while other products average 5-7 business days unless another estimate appears on the individual product page. Orders of $100 or more qualify for free standard ground shipping within the contiguous 48 states and Washington, D.C. View Shipping Policy.
- Warranty: No single warranty applies to every flush bolt in this collection. Mechanical, material, finish, commercial-use, and other warranty provisions vary among Deltana, Emtek, Baldwin Estate, and Ives. Review the individual product page and current manufacturer warranty for the exact model before ordering.
Frequently Asked Questions About Flush Bolts
What is a flush bolt used for?
A flush bolt is commonly used to hold the inactive leaf of a compatible pair of doors in place while allowing the active leaf to operate normally. The bolt is recessed into the door edge and engages a strike or receiver in the frame, sill, floor, or another location specified by the door system.
What is the difference between manual and automatic flush bolts?
A manual flush bolt must be engaged and released directly by the user. An automatic flush-bolt system uses the operation of the paired doors to control the inactive-door bolts. The current Ives automatic pair, for example, extends the bolts when the active leaf closes and retracts them when the active leaf opens.
What is the difference between round-corner and square-corner flush bolts?
The difference is the shape of the faceplate corners and the mortise required in the door edge. A round- or radius-corner flush bolt is designed for a rounded preparation, while a square-corner model fits a square mortise. Match the corner shape to the existing or specified door preparation.
What size flush bolt should I choose?
Choose according to the door preparation and hardware specification rather than assuming a longer bolt is automatically better. The current collection includes 4-inch, 6-inch, and 7-inch manual products as well as a Baldwin model with a 12-inch extension rod. Compare the complete technical dimensions for the exact product.
Do I need flush bolts at both the top and bottom of a double door?
It depends on the paired-door system. Some inactive leaves are designed to be secured at both the head and sill, while other assemblies use a different arrangement. Automatic systems may also be supplied as coordinated top-and-bottom pairs. Follow the door manufacturer's preparation and the hardware schedule for the complete opening.
Can the same flush bolt be used on wood and metal doors?
Not necessarily. Door material and preparation are product-specific. Some manual flush bolts may be intended for particular wood or metal preparations, while the current Ives automatic pair is specifically identified for metal doors. Verify the exact manufacturer's application before ordering.
Shop Flush Bolts at Coastal Hardware Store
Coastal Hardware Store offers flush bolts for French doors, double doors, inactive door leaves, residential projects, and supported commercial applications. Compare manual and automatic products from Deltana, Emtek, Baldwin Estate, and Ives by length, corner style, rod configuration, material, finish, door type, and installation requirements.
If you need help matching an existing mortise, deciding between round and square corners, identifying a manual or automatic configuration, or confirming whether a flush bolt is appropriate for a wood or metal door, our team can help you review the available options before ordering. Contact us at support@coastalhardwarestore.com or call us at 561-808-2588.