Ives FB42 Top Automatic Flush ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$341.40
$214.06
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Ives FB42 Top Automatic Flush Bolt for Wood Doors with Auxiliary Fire Latch

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Model: FB42 WD US32D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$341.40
$214.06
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Ives FB42 Top Automatic Flush Bolt for Wood Doors with Auxiliary Fire Latch

Professional Automatic Flush Bolt Solution for Wood Door Applications

The Ives FB42 Top Automatic Flush Bolt delivers fully automatic operation for wood door installations, featuring an auxiliary fire latch that eliminates the need for a bottom bolt. This non-handed flush bolt provides 3/4" bolt throw with 7/8" vertical adjustment and 3/4" bolt backset, engineered with low actuation forces and no spring tension for smooth operation. UL Listed for fire door applications and meeting ANSI/BHMA A156.3 Type 25 standards, this flush bolt ensures reliable security for commercial double door installations.

Professional Features & Benefits

  • Fully Automatic Operation: Inactive door is automatically latched with bolts extended when active door closes, and unlatched with bolts retracted when active door opens for seamless operation.
  • Auxiliary Fire Latch Design: FB42 model with auxiliary fire latch eliminates the bottom bolt requirement while maintaining fire door compliance and security.
  • Precise Bolt Specifications: 3/4" bolt throw with 7/8" vertical adjustment and 3/4" bolt backset provides reliable engagement with door frame.
  • Low Actuation Forces: Top bolt design with no spring tension ensures smooth operation and reduced wear over time.
  • Non-Handed Installation: Universal design accommodates both left and right-hand door configurations for installation flexibility.
  • Fire Door Compliance: UL Listed for 20 minutes fire rating applications ensuring code compliance for commercial installations.
  • Professional Construction: Available in brass or stainless steel substrate materials for durability in demanding commercial environments.
  • ANSI/BHMA Certification: Meets ANSI/BHMA A156.3 Type 25 standards for commercial-grade performance and reliability.

Technical Specifications

  • ANSI/BHMA: ANSI A156.3 Type 25
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Hand Direction: Non-Handed
  • Fire Rating: Yes
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1", L: 8-1/2", D: 2"
  • Product Group: Door Trim and Accessories
  • Product Model: FB42
  • Product Subgroup: Flush Bolts
  • Product Substrate: Brass or Stainless Steel
  • Product Type: Flush Bolts
  • Subcategory: Flush Bolts and Coordinators
  • UL Listing Type: UL Listed 20 Minutes

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Ives Quality?

Ives FB42 flush bolts deliver professional-grade reliability with brass or stainless steel construction and UL Listed fire door compliance. Meeting ANSI/BHMA A156.3 Type 25 standards, this automatic flush bolt system provides dependable security for demanding commercial applications. Engineered for wood door installations where reliable automatic operation and fire safety compliance are essential.

Manufacturer Resources

Ives Full Line Catalog

Product Specs

Subcategory:
Flush Bolts and Coordinators
Product Group:
Door Trim and Accessories
Product Subgroup:
Flush Bolts
Product Type:
Flush Bolts
ANSI/BHMA:
ANSI A156.3 Type 25
Commercial/Residential:
Commercial
UL Listing Type:
UL Listed 20 Minutes
Product Model:
FB42
Door Hand Direction:
Non-Handed
Product Dimension:
W: 1", L: 8-1/2", D: 2"
Fire Rating:
Yes
Product Category:
Door Trim and Accessories
Product Substrate:
Brass or Stainless Steel
Department:
Door Hardware

Ives FB42 WD US32D – Frequently Asked Questions

1) Is the Ives FB42 flush bolt handed? I have both a left and a right inactive leaf in the building.
Non-handed. One FB42 covers either an LH or RH inactive leaf, so a property manager standardizing across a building can stock a single part number per finish instead of splitting the order by hand.
2) Will the Ives FB42 bolt reach my existing top strike in the frame?
The bolt throws 3/4 inch with 7/8 inch of vertical adjustment, and sits on a 3/4 inch bolt backset. That 7/8 inch of adjustment is what lets you pick up an existing head strike whose height is slightly off, and the 3/4 inch throw is standard engagement for a flush bolt strike. If your current strike is drilled deeper than 3/4 inch it will still receive the bolt; if it is a shallow surface strike, check the depth before you rout.
3) Is the Ives FB42 flush bolt fire rated and UL listed?
Fire rated, and UL Listed 20 minutes. It also meets ANSI/BHMA A156.3 Type 25. For a facility spec that calls out a longer fire rating on the pair, look at a bolt carrying that rating, such as the ABH 1860P/1862P automatic flush bolt pair rated 3-hour with thermal lock.
4) What is the closest automatic flush bolt to the Ives FB42 for a pair of metal doors instead of wood?
The Ives FB42 is built for wood doors and is non-handed with a 3/4 inch bolt throw and an auxiliary fire latch that removes the bottom bolt. For a metal door pair, the ABH 1860P/1862P is an automatic flush bolt pair rated fire 3-hour with a thermal lock, sold as a top and bottom pair rather than a top bolt with a fire latch. Confirm the door material before ordering: an FB42 prepped for a wood stile will not suit a hollow metal opening.
5) What flush bolt should I use if the inactive door needs to be locked and released by key?
The Ives FB42 has no cylinder; it operates automatically off the active leaf. When the inactive leaf must be under key control, Adams Rite builds cylinder-operated flushbolts: the 1870 series is a cylinder-operated flushbolt with key control, and the 1877 is a cylinder-operated flushbolt for paired wood doors, which matches the FB42's wood door application. Key control means the leaf is released only by an authorized key rather than by opening the active door.
6) If the inactive leaf does not need to latch automatically, what flush bolt can be used in place of the Ives FB42?
The FB42 latches the inactive leaf automatically when the active door closes and retracts when it opens. Where the inactive leaf is set once and left, a manual bolt is the alternative: the ABH 1854 series is a manual flush bolt set with a fire bolt for metal doors, and the ABH 1855S is a manual single flush bolt for metal doors with a 3/4 inch throw, the same throw the FB42 carries. Manual bolts require someone to operate the lever at the leaf.
7) How does an automatic flush bolt like the Ives FB42 differ from a manual flush bolt?
Automatic means nobody has to touch the inactive leaf. When the active door closes, the FB42 drives its bolt up and latches the inactive leaf; when the active door opens, the bolt retracts and the inactive leaf is free. A manual bolt, like the ABH 1855S or the Trimco 3999 corner mount, has to be thrown and released by hand each time. Choose automatic where the second leaf gets opened regularly (moving carts, deliveries, egress width) and manual where the inactive leaf stays shut for months at a time.
8) What mortise pocket do I have to rout in the door edge for an Ives FB42?
Size the pocket from the bolt body dimensions: W 1 inch, L 8-1/2 inch, D 2 inch. Rout the edge of the inactive leaf to take that case, then bore the head of the frame for the bolt. Use the Ives template for hole locations rather than transferring off the old bolt.
9) Do I need one FB42 per opening or two?
One per pair of doors. The FB42 goes in the top of the inactive leaf only, and because the auxiliary fire latch stands in for the bottom bolt, there is no second bolt to buy for that leaf. The active leaf takes your lock or exit device, not a flush bolt.
10) Can I swap an existing manual flush bolt out for the Ives FB42 without new door prep?
Plan on new prep. The FB42 case is 1 x 8-1/2 x 2 inches and automatic bolts carry a different mechanism than a manual bolt, so an old 6 or 7 inch manual mortise pocket (the size the Delaney 7 inch mortise bolt and the Trimco 3999 6 inch corner mount run) will not simply receive it. Rout to the Ives template on the inactive leaf edge and re-drill the head strike.
11) I need a bottom fire bolt for a pair. Does the Ives FB42 cover that?
No. The FB42 is the top automatic bolt, and its auxiliary fire latch is what takes the place of a bottom bolt in that arrangement. Where an opening does call for a separate bottom bolt, the ABH 1858 is a universal bottom fire bolt of manual operation. Decide which arrangement the opening is being detailed for before ordering, since the FB42 with its fire latch and a separate bottom fire bolt are two different ways to build the inactive leaf.
12) For a residential or interior wood door pair, is there a simpler flush bolt than the Ives FB42?
Yes. The FB42 is a commercial automatic bolt carrying ANSI A156.3 Type 25 and a UL 20 minute listing, which an interior pair with no fire duty does not call for. Simpler mortised bolts include the Delaney 6 inch square end solid brass flush bolt, the Delaney 7 inch slide type mortise in flush bolt, and the Orca Hardware 6 inch flush bolt with radius corners. These are manually operated and do not carry the FB42's fire latch, so keep the FB42 on any rated opening.
13) What do I use instead of the Ives FB42 when the inactive leaf has to release automatically from the egress side?
The FB42 latches and unlatches with the active leaf, so the active door has to be opened first. Adams Rite offers two-point flushbolts for a different release behavior: the MS2180 series is an auto-release two-point flushbolt with a Smartlock mechanism, and the MS1880/MS1881 are two-point flushbolts with an interlock mechanism. Two-point devices throw top and bottom together, where the FB42 is a top bolt with an auxiliary fire latch in place of the bottom bolt.
14) What finishes does the Ives FB42 automatic flush bolt come in?
Seven: 605 bright brass, 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, 622 matte black, 629 bright stainless, and 630 satin stainless. The 629 and 630 run on the stainless substrate and the brass finishes on brass, so matching the flush bolt to the hinges and exit hardware already on the opening is a matter of picking the BHMA number off those parts.
15) Is the Ives FB42 hard to operate, or does it slam the inactive leaf?
It runs on low actuation forces with no spring tension in the top bolt, so the inactive leaf is not fighting a spring every cycle. In practice that means less wear on the bolt and strike over a high-traffic opening and a quieter close than a spring-loaded design.
16) Is the Ives FB42 rated for commercial use or is it residential-grade trim?
Commercial. It is certified to ANSI/BHMA A156.3 Type 25 and built on brass or stainless steel, which is the grade of bolt you put on office, school, healthcare, and municipal pairs. The decorative brass flush bolts in the market, such as the Delaney 6 inch square end solid brass bolt or the Orca 6 inch flush bolt with radius corners, are a different class of product and are manual.
17) Can Emtek flush bolts be used where the Ives FB42 is specified?
Emtek offers flush bolts, but the FB42 is a commercial device carrying ANSI A156.3 Type 25 and a UL Listed 20 minute rating with brass or stainless steel construction, and it operates automatically off the active leaf. Where a specification calls out an automatic fire rated top bolt for a wood pair, match those attributes rather than substituting on appearance. For non-rated decorative wood pairs the Emtek flush bolts are the lighter-duty choice.
How fast can I get the Ives FB42 WD US32D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Ives FB42 WD US32D come with a warranty?
Absolutely. The Ives FB42 WD US32D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Ives FB42 WD US32D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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