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ROCKWOOD 2940 Top Bolt Only Automatic Flush Bolt
Material: Brass, stainless steel;
Finishes: US26D, US32D;
Size: 1" x 8-1/2"
Fastner: 6 ea. #8 x 3/4" FH combo screws, 2 ea. #8-32 x 1/2" FH MS, 3 ea. #10 x 1" FH WS
Features:
- For wood doors
- Fully automatic–opening active door retracts top and bottom bolts
- Override feature prevents damage to doors or bolts if bolt heads are blocked from entering strikes
- Bolt head rods are adjustable up to 1/2"
- Thermal lock automatically locks the inactive door under high heat conditions due to fire
- UL listed
ROCKWOOD OVERVIEW
Rockwood products are normally used on all types of institutional buildings, offices, retail, educational, detention, sports facilities, hotel and restaurant, and finer residences.
ENVIRONMENTAL MANAGEMENT
ASSA ABLOY is commited to protecting the quality of the environment as well as the health and safety of its employees, customers, and the community. Please see our Environmental Health and Safety Policy for details on how we are dedicated to this commitment.
RESOURCES & DOWNLOADS
Manufacturer Resources
Product Specs
- Product Group:
- Door Trim and Accessories
- Subcategory:
- Bolts and Latches
- Product Subgroup:
- Flush Bolts
- Product Type:
- Flush Bolts
- ANSI/BHMA:
- ANSI A156.3, Type 27
- Commercial/Residential:
- Commercial
- Product Model:
- 2845
- Product Category:
- Door Trim and Accessories
- Department:
- Door Hardware
Rockwood 2940 US26D – Frequently Asked Questions
1) Does the Rockwood 2940 include both the top and bottom bolt, or just the top?
Top bolt only. The 2940 covers the head of the inactive leaf; to bolt at the threshold as well you need the matching bottom bolt ordered separately. If you would rather buy the pair in one part number, the Ives FB41 automatic flush bolt set for wood doors is a complete set, and the ABH 1860P/1862P is an automatic pair with thermal lock.
2) Can the Rockwood 2940 be used on a fire rated pair of doors?
The 2940 is UL listed and carries a thermal lock that locks the inactive leaf automatically under the high heat of a fire, which is the behavior a fire rated pair needs from its inactive leaf. It meets ANSI A156.3, Type 27.
3) What if the strike is slightly out of alignment when the doors are installed?
Two things on the 2940 handle that. The bolt head rods adjust up to 1/2 inch, so you can take up misalignment between the bolt and the head strike without re-prepping the door. And the override feature keeps the bolt from damaging the door or itself if a bolt head is blocked from entering its strike, which is what saves you when a frame has settled.
4) What is the closest equivalent to the Rockwood 2940 top automatic flush bolt for a pair of wood doors?
The Rockwood 2940 is a top-bolt-only automatic flush bolt for wood doors, 1 inch by 8-1/2 inches, in 626 satin chrome or 630 satin stainless steel. The Ives FB42 WD is the direct counterpart: a top automatic flush bolt for wood doors with an auxiliary fire latch. Both are single top bolts rather than pairs, so either one covers the top of the inactive leaf and leaves the bottom to be specified separately.
5) I need both the top and bottom bolt on the inactive leaf of a wood pair - what covers that in one order?
The Rockwood 2940 is a top bolt only. For a full set on wood doors, the Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw, rated 90 minutes. The ABH 1860P/1862P is an automatic flush bolt pair, fire rated 3 hour, with a thermal lock - the same thermal lock behavior the 2940 uses to lock the inactive door under high heat.
6) How does an automatic flush bolt differ from a manual one on a pair of doors?
With the Rockwood 2940, opening the active leaf retracts the top and bottom bolts on its own, so the inactive leaf frees up without anyone reaching for a lever at the head of the door. Manual flush bolts stay where you set them until someone throws or retracts them by hand, which is why they suit an inactive leaf that stays closed for months. Manual options include the Ives FB358 and the ABH 1855S single. If you want the inactive leaf under key control instead, the Adams Rite 1877 is a cylinder-operated flushbolt for paired wood doors.
7) What size mortise pocket does the Rockwood 2940 flush bolt need in the door edge?
The face plate measures 1 x 8-1/2 inches, so the prep in the edge of the inactive leaf is cut to suit that footprint. Worth checking against your existing prep before you order if you are replacing an older bolt, since a shorter 6 inch face plate leaves a gap.
8) Do I need anything besides the flush bolt to finish a pair of wood doors?
Mounting screws come with the 2940 (six #8 x 3/4 inch combo screws, two #8-32 x 1/2 inch machine screws, three #10 x 1 inch wood screws). What is not in the box is the bottom bolt, since this part is the top bolt only, and the strikes at the head and threshold. Some pairs also call for an auxiliary fire latch on the top bolt; the Ives FB42 for wood doors is the version that carries one.
9) What is the difference between the Rockwood 2940 and a two-point flushbolt like the Adams Rite MS2180?
The Rockwood 2940 is a single top bolt for wood doors that meets ANSI A156.3, Type 27, sized 1 inch by 8-1/2 inches with bolt head rods adjustable up to 1/2 inch. The Adams Rite MS2180 is an auto-release two-point flushbolt with a Smartlock mechanism, and the MS1880/MS1881 are two-point flushbolts with an interlock mechanism - one device driving both the top and bottom points. The 2940 handles the head only and relies on a separate bottom bolt to complete the leaf.
10) Can I use a 6 inch mortise flush bolt in place of the Rockwood 2940?
No - they are different devices. The Rockwood 2940 is fully automatic: opening the active door retracts the top and bottom bolts, and it carries a thermal lock that secures the inactive door under fire heat. A Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end, the 3999SE the square-end version, and the Delaney 4108 a 6 inch square end solid brass flush bolt. Those are thrown and released by hand at the bolt itself, so on a pair where staff pass through constantly the inactive leaf stays bolted until someone reaches down to it.
11) We want the inactive leaf held by key, not automatically - what replaces the Rockwood 2940?
The Rockwood 2940 retracts automatically when the active door opens, with no key control. For key-operated release, the Adams Rite 1877 is a cylinder-operated flushbolt for paired wood doors, and the 1870 series is a cylinder-operated flushbolt with key control. Those put the inactive leaf under the keyway instead of under the action of the active door.
12) I only need to replace the bottom bolt on a pair that already has a Rockwood 2940 at the head - what fits?
The Rockwood 2940 covers the top of the inactive leaf only. For the bottom position, the ABH 1858 is a universal bottom fire bolt of manual operation, and the Ives FB457 is a manual flush bolt with a 12 inch rod for metal doors. Both are bottom or single bolts ordered on their own, so the head hardware already in the door stays in place.
13) Is the Rockwood 2940 flush bolt suitable for commercial and institutional buildings?
It is a commercial-grade part, built in brass and stainless steel, and Rockwood door accessories of this kind go into institutional buildings, offices, retail, education, detention, sports facilities, and hotels. For a facility standard, the ANSI A156.3 Type 27 designation is the line to write on the hardware schedule.
14) Is the Rockwood 2940 the right flush bolt for a residential double door?
The Rockwood 2940 is a commercial flush bolt built to ANSI A156.3, Type 27, UL listed, with a thermal lock for fire conditions. For residential-scale double doors and French doors, the Delaney 7 inch slide type mortise-in flush bolt, the Delaney 7 inch mortise extension flush bolt, the Orca 6 inch flush bolt with radius corners, and Emtek flush bolts are the lighter mortised alternatives. Those are hand-operated at the bolt rather than driven by the active leaf.
15) What throw and backset do the manual flush bolts have compared to the Rockwood 2940?
The Rockwood 2940 has bolt head rods adjustable up to 1/2 inch to take up variation at the strike. Among manual units, the Ives FB358 has a 3/4 inch throw with a 1/2 inch bolt diameter, the ABH 1855S also throws 3/4 inch, and the International Door Closers FB-1202 has a 5/8 inch throw with a 1/8 inch offset and 7/8 inch backset, square end, with guide. Confirm the head and sill conditions before swapping, since the 2940 adjusts at the rod rather than fixing a throw.
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Does the Rockwood 2940 US26D come with a warranty?
Absolutely. The Rockwood 2940 US26D is backed by a manufacturer’s warranty.
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