Delaney 7" Mortise Extension in Flush Bolt

It is the mortised bolt that holds the inactive leaf of a pair fixed, so the active leaf has something to latch into. The bolt body mortises into the edge of the inactive door and the slide-type actuator sits flush in the face plate, so nothing projects to catch a cart or a shoulder. Delaney builds it in zinc and lists it at 7 inches.

Yes, the Delaney 7 inch mortise extension flush bolt is UL Listed. That is the one listing marking Delaney states on it, so if your opening needs a specific hourly fire rating on the bolt, confirm that separately against your door and frame label requirements.

The Delaney is a mortise type, so it needs a pocket routed into the edge of the inactive leaf plus a face cutout for the 7 inch plate. If your door is already prepped for a surface-applied bolt, or you cannot mortise it (hollow metal in the field, a door you do not want to cut), a surface or corner mount bolt is the better call. ZenSupply carries the Trimco 3999 as a 6 inch corner mount with a rounded end, and the 3999SE as the square end version of the same.

Two per inactive leaf, one at the head and one at the sill, is the normal arrangement, and this Delaney is sold as the single 7 inch bolt rather than a matched top and bottom set. If you would rather buy the pair in one box, the ABH 1854 Series is a manual flush bolt set that includes a fire bolt, and the Ives FB41 is an automatic set for wood doors.

Manual bolts like the Delaney are thrown and released by hand at each leaf, which is what you want on a door that stays fixed most of the time, a storeroom or a stair pair opened only for moving equipment. Automatic bolts throw themselves when the inactive leaf closes, which is what egress and heavier-traffic pairs usually call for. On the automatic side ZenSupply stocks the Ives FB41 set for wood doors and the ABH 1860P/1862P pair. If you want the bolt under key control instead of free to operate, the Adams Rite 1870 Series is cylinder operated.

Not directly. The Delaney is a 7 inch bolt, so the face cutout in the door is an inch longer than a 6 inch plate and the old mortise will show at one end. If you are matching an existing 6 inch prep, stay at 6 inches, the Trimco 3999 corner mount and the Orca Hardware 6 inch flush bolt with radius corners are both 6 inch bodies. Going up to the Delaney means recutting the door face.

The Delaney 7" mortise extension flush bolt is a zinc manual mortise flush bolt with a 7 inch face. Straight manual equivalents include the Ives FB358 manual flush bolt, which is specified with a 3/4 inch throw and a 1/2 inch bolt diameter, the ABH 1855S manual flush bolt single for metal doors with a 3/4 inch throw, and the International Door Closers FB-1202, which uses a positive U joint actuator with a 5/8 inch throw, 1/8 inch offset and 7/8 inch backset with a square end and guide. All are hand-operated bolts thrown at the inactive leaf rather than automatic bolts released by the active door.

The Delaney 7" mortise extension flush bolt is a manual bolt, thrown and retracted by hand at the inactive leaf. For automatic operation, the Ives FB41 automatic flush bolt set for wood doors carries a 3/4 inch throw and a 90 minute fire rating, the Ives FB42 top automatic flush bolt for wood doors includes an auxiliary fire latch, and the ABH 1860P/1862P automatic flush bolt pair is fire rated 3-hour with a thermal lock. Automatic bolts retract when the active leaf opens, so the inactive leaf follows without a separate operation at the door.

The Delaney 7" mortise extension flush bolt is operated at the bolt itself. Where the inactive leaf has to be controlled by key, the Adams Rite 1870 Series cylinder-operated flushbolt provides key control, and the Adams Rite 1877 cylinder-operated flushbolt is built for paired wood doors. Cylinder operation lets the bolt be thrown or released from the pull side without opening the active leaf, which matters on a storefront or a paired entrance that gets secured from outside.

The Delaney mortise extension flush bolt has a 7 inch face. Where the prep is shorter, the Orca Hardware 6" flush bolt comes with radius corners, the Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end, and the Trimco 3999SE is the 6 inch corner mount with a square end. Face length and end shape both have to match the existing mortise, since a rounded end will not sit in a square-routed pocket without rework.

Two: US26D dull chrome and 613 satin bronze oil rubbed. US26D is the standard match for commercial lever and closer hardware across a building, so it is the one to pick if you are standardizing corridor and stair openings. 613 is the darker oil rubbed bronze for residential and hospitality trim.

Zinc is what Delaney casts this bolt from, and it suits interior commercial and residential pairs, apartment corridors, office and closet pairs, where the bolt is thrown occasionally rather than cycled all day. For exterior pairs, heavy institutional traffic, or hollow metal openings, the metal-door bolts are the better spec: ZenSupply carries the ABH 1855S single manual bolt for metal doors with a 3/4 inch throw and the Ives FB457 with a 12 inch rod for metal doors.

Yes. A mortise flush bolt needs somewhere to land at both ends, a strike mortised into the head frame for the top bolt and either a threshold strike or a drilled dust proof strike in the floor for the bottom. Those are separate parts from the bolt itself and get ordered alongside it. If the floor is finished concrete you will want the dust proof type so debris does not pack the hole.

Not with the Delaney, it is a slide type actuator operated by hand with no cylinder. Where you need the inactive leaf under key control, or you need the bolts interlocked so both throw together, look at the Adams Rite cylinder-operated flushbolts: the 1870 Series with key control, the 1877 for paired wood doors, or the MS1880/MS1881 two-point flushbolts with an interlock mechanism.

No. The Delaney 7" mortise extension flush bolt is a single mortise bolt with a 7 inch face, thrown at one point on the inactive leaf. The Adams Rite MS1880/MS1881 is a two-point flushbolt with an interlock mechanism, and the Adams Rite MS2180 Series is an auto-release two-point flushbolt with a Smartlock mechanism. Two-point units secure the head and sill together off one operation and carry their own interlock or release hardware, so they are not a drop-in for a single mortise bolt pocket.

The Delaney 7" mortise extension flush bolt is UL Listed and comes in US26D Dull Chrome and 613 Satin Bronze Oil-Rubbed. Where a fire bolt is called for on the drawing, the ABH 1854 Series is a manual flush bolt set supplied with a fire bolt for metal doors, the ABH 1858 is a universal bottom fire bolt with manual operation, and the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors. Confirm the rating required for the opening against the label on the door and frame before choosing between them.

The Delaney 7" mortise extension flush bolt is a zinc mortise bolt with a 7 inch face that sets into a pocket in the door edge. The Ives FB457 manual flush bolt uses a 12 inch rod length for metal doors, and the ABH 1858 is a universal bottom fire bolt. A rod-style bolt runs an extension up the door edge to reach the head, so the prep and the reach at the top of the leaf differ from a short mortise bolt worked at the bolt face.

The Delaney 7" mortise extension flush bolt is offered in US26D Dull Chrome and 613 Satin Bronze Oil-Rubbed, which cover the two most common commercial door schedules. Emtek Flush Bolts are the alternative where the pair is being finished to a residential or decorative trim package. Match the flush bolt finish to the hinges and lock trim on the same leaf, since the bolt face is visible on the door edge when the inactive leaf is open.