Deltana 7FBZ 7" Flush Bolt, Zinc

That's exactly what a flush bolt like the Deltana 7FBZ is for. It mortises into the edge of the inactive leaf of a pair and throws a 3/4 inch bolt into a strike in the head frame or the floor, holding that leaf fixed so the active leaf has something to latch against. You operate it by hand at the bolt itself, so the inactive leaf stays locked down until someone deliberately releases it. One bolt handles one point; order top and bottom separately if you want the leaf secured at both head and threshold.

Manual. The 7FBZ is a hand-operated bolt: you slide it to throw and slide it back to release. Automatic flush bolts release the inactive leaf on their own when the active leaf opens, which is what you want on an opening people pass through both leaves of regularly. For that behavior, the Ives FB41 automatic flush bolt set for wood doors is the alternative, also with a 3/4 inch throw.

If the old bolt is a 7 inch round corner mortise flush bolt, the 7FBZ matches on both counts and the existing pocket and radius routing should take it. Square end bolts will not: swapping a square corner faceplate for the round corner 7FBZ leaves square shoulders in the pocket that need to be radiused, and going the other way leaves a visible gap. Check the corner shape on what's coming out before you order.

The Deltana 7FBZ is a zinc flush bolt described by its 7 inch size, round corners and 3/4 inch throw. When the opening is a fire rated pair, buyers generally specify a bolt the manufacturer publishes a fire rating for: the Ives FB358 manual flush bolt with 3/4 inch throw and 1/2 inch bolt diameter carries a fire rating, the Ives FB41 automatic flush bolt set for wood doors with 3/4 inch throw is rated 90 minutes, and the ABH 1860P/1862P automatic flush bolt pair is fire rated 3 hour with a thermal lock. The ABH 1854 set includes a fire bolt for metal doors, and the ABH 1858 is a universal bottom fire bolt.

The Deltana 7FBZ is thrown by hand at the bolt itself, with a 3/4 inch throw. When the inactive leaf needs to be under key control, the cylinder-operated types apply instead: the Adams Rite 1870 Series is a cylinder-operated flushbolt with key control, and the Adams Rite 1877 is a cylinder-operated flushbolt for paired wood doors. Both are operated by a cylinder rather than by a lever or slide on the bolt face, which is the practical difference for a property manager controlling who can secure or release the leaf.

The Deltana 7FBZ is a 7 inch flush bolt with round corners and a 3/4 inch throw. For a square end face plate, the Trimco 3999SE is a 6 inch corner mount flushbolt with a square end, and the International Door Closers FB-1202 is a square end flush bolt with a 5/8 inch throw, 1/8 inch offset and 7/8 inch backset. Note the throw differs: the 7FBZ and the ABH 1855S both throw 3/4 inch, while the FB-1202 throws 5/8 inch, which changes how deep the bolt engages the strike at the head or the floor.

The Deltana 7FBZ is a manually operated 7 inch flush bolt. Where the inactive leaf should secure itself when the doors close, the automatic type does that instead: the Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw, the Ives FB42 is a top automatic flush bolt for wood doors with an auxiliary fire latch, and the ABH 1860P/1862P is an automatic flush bolt pair. The Adams Rite MS2180 is an auto-release two-point flushbolt with a Smartlock mechanism. Automatic bolts release when the active leaf opens, so the inactive leaf can be operated without a separate manual throw.

Four finishes on the 7FBZ: oil rubbed bronze, brushed nickel, polished brass, and antique brass. Those are the standard residential and light commercial decorative finishes, so matching a set of French doors or a pair of entry doors to existing levers and hinges is usually straightforward. Note there is no US26D satin chrome or prime-for-paint option in the range, so if the rest of the opening is commercial satin chrome, this is not the bolt that matches it.

Deltana classes the 7FBZ as commercial, and it's a common choice on office and hospitality door pairs where the look matters. Where it isn't the right call is a high-traffic or rated opening: it's a plated zinc manual bolt, so for metal door pairs in a commercial corridor the ABH 1855S manual flush bolt for metal doors, also 3/4 inch throw, or the Ives FB457 with a 12 inch rod for metal doors are built for that duty.

The 7FBZ is sold each, and one bolt secures one point. To pin the inactive leaf at both the head and the floor, order two. Plenty of installs use a single bolt at the top only, which is enough for a light interior pair but leaves the bottom of the leaf free to flex. Some competing products ship as a set instead, like the ABH 1854 flush bolt set and the Ives FB41 set, so watch the unit of measure when you're comparing.

The 7FBZ is the bolt assembly itself, the 7 inch faceplate and the 3/4 inch throw bolt. Plan on providing the strike at the head frame and the dust proof floor strike separately, plus the rod guide if you're running the bolt down a hollow metal or long pocket. Some flush bolts in the trade are catalogued with a guide included, as the International Door Closers FB-1202 is, but you should specify the strikes as their own line items here.

It will engage, and deeper. The 7FBZ throws 3/4 inch against your current 5/8, as on the International Door Closers FB-1202. The extra 1/8 inch means the existing strike pocket may bottom out the bolt before it fully throws, so deepen the hole in the head frame or floor strike if the bolt stops short. A bolt that only travels part way is the usual cause of an inactive leaf that rattles.

The Deltana 7FBZ is a zinc flush bolt, offered in oil rubbed bronze, brushed nickel, polished brass and antique brass. For a solid brass body, the Delaney 6 inch square end solid brass flush bolt is the brass unit in the comparable group. Emtek also offers flush bolts. Material choice here is about the substrate under the finish, which matters where the bolt is exposed to weather or heavy cleaning chemistry rather than to interior corridor traffic.

The Deltana 7FBZ is a 7 inch flush bolt with round corners. Delaney offers two at the same nominal length: the 7 inch slide type mortise in flush bolt and the 7 inch mortise extension flush bolt. Shorter faces in the same family include the Delaney 6 inch square end solid brass flush bolt, the Orca Hardware 6 inch flush bolt with radius corners, and the Trimco 3999 6 inch corner mount rounded end flushbolt. If you are matching an existing mortise pocket rather than cutting new, the face length and corner shape are what decide whether the plate covers the prep.

The Deltana 7FBZ is a zinc flush bolt in a 7 inch size with a 3/4 inch throw. Several peers are specified by the door material they mortise into: the ABH 1855S is a manual flush bolt single for metal doors with a 3/4 inch throw, the ABH 1854 is a manual flush bolt set with fire bolt for metal doors, and the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors. On the wood side, the Ives FB41 is an automatic set for wood doors and the Adams Rite 1877 is a cylinder-operated flushbolt for paired wood doors. Match the bolt to the leaf construction you are prepping.

The Deltana 7FBZ is a single 7 inch zinc flush bolt with a 3/4 inch throw - one bolt, one mortise. The Adams Rite MS1880/MS1881 is a two-point flushbolt with an interlock mechanism, and the Adams Rite MS2180 is an auto-release two-point flushbolt with a Smartlock mechanism; two-point units secure the leaf at two points from one mechanism. They are not interchangeable in a prep: a two-point unit is a different mortise and a different operation, so it is a substitute for the opening, not a drop-in for a single bolt pocket.

The Deltana 7FBZ has a 7 inch face and a 3/4 inch throw. Where the bolt has to reach further up the leaf, the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors, and the Delaney 7 inch mortise extension flush bolt is the extension style in the same nominal length. The rod length sets how far above the mortise the bolt engages the frame, which is the dimension to confirm against the head clearance on the opening.

No handing to specify. The 7FBZ mortises into the edge of the inactive leaf and throws straight out the top or bottom of the door, so the same part works on a left hand or right hand pair and the same part works at the head or at the threshold. What you do need to get right is the finish and the 7 inch faceplate length matching the mortise.