Ives FB32 Automatic Top Bolt w...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$333.90
$214.89
Ives FB32 Automatic Top Bolt with Auxiliary Fire Latch - 3/4" Throw Non-Handed

Ives FB32 Automatic Top Bolt with Auxiliary Fire Latch - 3/4" Throw Non-Handed

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Model: FB33 12 MD US32D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$333.90
$214.89
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Ives Automatic Top Bolt with Auxiliary Fire Latch - 3/4" Throw Non-Handed

Professional Automatic Flush Bolt Solution for Metal Door Applications

The Ives FB32/FB33 automatic top bolt with auxiliary fire latch provides fully automatic operation for metal door applications where bottom bolt elimination is required. This non-handed flush bolt features a 3/4" bolt throw with 7/8" vertical adjustment and 3/4" backset, designed specifically for use with metal doors only. The FB32 model eliminates the bottom bolt with auxiliary fire latch, while the FB33 includes a retrofit plate to cover existing bottom bolt preparation.

Professional Features & Benefits

  • Automatic Operation: Fully automatic system ensures inactive door is latched and bolts are extended when active door closes, with automatic retraction when active door opens.
  • Precise Bolt Specifications: 3/4" bolt throw with 7/8" vertical adjustment and 3/4" backset for reliable engagement with door frame.
  • Low Actuation Forces: Top bolt design with no spring tension reduces operating effort for smooth, effortless operation.
  • Fire Safety Compliance: Auxiliary fire latch design eliminates bottom bolt while maintaining fire door compatibility and UL listing.
  • Retrofit Capability: FB33 model includes retrofit plate to cover existing bottom bolt preparation for easy upgrades.
  • Non-Handed Design: Universal installation eliminates field determination requirements and reduces inventory needs.
  • Standard Rod Configuration: 12" standard rod length measured from center of flush bolt body to bolt tip accommodates typical door applications.
  • ANSI/BHMA Compliance: Meets ANSI A156.3 Type 25 standards for commercial flush bolt applications.

Technical Specifications

  • ANSI/BHMA: ANSI A156.3 Type 25
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Hand Direction: Non-Handed
  • Product Category: Door Trim and Accessories
  • Product Dimension: W: 1", L: 6-3/4", D: 2"
  • Product Group: Door Trim and Accessories
  • Product Model: FB32/FB33
  • Product Subgroup: Flush Bolts
  • Product Substrate: Brass or Stainless Steel
  • Product Type: Flush Bolts
  • Subcategory: Flush Bolts and Coordinators

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness and metal door construction compatibility for this flush bolt system.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door edge and verify clearance for 6-3/4" length and 2" depth requirements.
  3. Prepare door edge by routing flush bolt pocket and drilling required holes per manufacturer specifications for proper bolt body installation.
  4. Install flush bolt body into prepared pocket ensuring proper alignment with 3/4" backset and verify 7/8" vertical adjustment range.
  5. Adjust bolt throw to achieve proper 3/4" extension and verify smooth automatic operation throughout full cycle of active door movement.
  6. Test automatic latching sequence to verify inactive door latches when active door closes and unlatches when active door opens. Refer to manufacturer documentation for complete installation details and adjustment procedures.

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 flush bolt systems deliver professional-grade reliability with brass or stainless steel construction and UL listing for fire door applications. ANSI/BHMA A156.3 Type 25 compliance ensures consistent performance in demanding commercial environments. Engineered for metal door applications where dependable 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
Product Model:
FB32/FB33
Door Hand Direction:
Non-Handed
Product Dimension:
W: 1", L: 6-3/4", D: 2"
Product Category:
Door Trim and Accessories
Product Substrate:
Brass or Stainless Steel
Department:
Door Hardware

Ives FB33 12 MD US32D – Frequently Asked Questions

1) What is the difference between the Ives FB32 and FB33 flush bolt?
Same automatic top bolt with auxiliary fire latch in both cases. The FB33 adds a retrofit plate that covers the existing bottom bolt preparation in the inactive door, so it is the one to order when you are pulling out an old two-point flush bolt set and are left with a hole at the bottom of the door. On new prep, or where nothing needs covering, order the FB32. Both are offered in the same seven finishes.
2) How does an automatic flush bolt with an auxiliary fire latch eliminate the bottom bolt?
The top bolt handles the head strike automatically: when the active leaf closes it drives the bolt up into the frame, and when the active leaf opens the bolt retracts and the inactive leaf is free. The auxiliary fire latch takes over what a bottom bolt would normally do, which is why no bottom bolt or floor strike is needed on the inactive door. If your opening still calls for a conventional two-point arrangement, an automatic pair such as the ABH 1860P/1862P is the other route.
3) Will the Ives FB32 bolt reach my head strike, and how much adjustment do I get?
The bolt throws 3/4 inch with 7/8 inch of vertical adjustment, and the standard rod is 12 inches measured from the center of the flush bolt body to the bolt tip. The 7/8 inch range is what lets you dial out normal frame and clearance variation at the head once the body is set. Backset is 3/4 inch.
4) Is the Ives FB32 flush bolt approved for a fire rated pair of doors?
Fire door use is what the auxiliary fire latch design is for, and the assembly is UL listed. It also meets ANSI/BHMA A156.3 Type 25 for commercial flush bolts, which is the line item a spec writer or facility procurement group usually wants confirmed on a fire rated pair.
5) Can I use the Ives FB32 to replace an existing top and bottom flush bolt set on a metal door pair?
That is exactly what the FB33 version is for. It carries the same automatic top bolt with auxiliary fire latch plus a retrofit plate that covers the bottom bolt prep left in the door, so you do not have to fill or re-skin the leaf. Order the FB33 in the finish that matches the existing trim; the plate is only useful if the old bottom prep is in the door edge you are covering.
6) What is the closest automatic flush bolt to the Ives FB32 for a fire-rated pair of metal doors?
The ABH 1860P/1862P automatic flush bolt pair is the nearest automatic equivalent. Like the FB32, it is an automatic flush bolt for a paired opening rather than a manually operated bolt, and it is fire rated 3-hour with a thermal lock. The difference is configuration: the ABH set is a pair of bolts, top and bottom, while the FB32 is a top bolt with an auxiliary fire latch that eliminates the bottom bolt on metal doors, and the FB33 adds a retrofit plate to cover an existing bottom bolt preparation.
7) I need the inactive leaf of a pair to be key controlled, not automatic. What should I look at instead of the FB32?
Look at the Adams Rite 1870 Series cylinder-operated flushbolt with key control, or the Adams Rite 1877 for paired wood doors. Both are operated by a cylinder so only a keyholder can release the inactive leaf. The Ives FB32/FB33 has no key control at all; it latches the inactive door automatically when the active door closes and releases when the active door opens.
8) I want a manual flush bolt instead of an automatic one on a metal door pair. What are my options?
For manual operation on metal doors, the ABH 1854 Series is a manual flush bolt set with a fire bolt, and the ABH 1855S is a manual flush bolt single with a 3/4 inch throw, matching the 3/4 inch throw of the Ives FB32/FB33. Manual bolts are thrown and retracted by hand at the door; the FB32/FB33 extends and retracts automatically as the active door closes and opens.
9) Will an International Door Closers FB-1202 flush bolt drop into the same prep as the Ives FB32?
No, the prep dimensions differ. The International Door Closers FB-1202 is a square end flush bolt with a positive U joint actuator, a 5/8 inch throw, 1/8 inch offset and a 7/8 inch backset. The Ives FB32/FB33 uses a 3/4 inch throw with a 3/4 inch backset, so the strike engagement and the edge prep are not interchangeable between the two.
10) Do I need to specify handing for the Ives FB32 top bolt?
No handing to call out. The FB32/FB33 is non-handed, so one part covers a left or right inactive leaf and you can stock a single item across a building instead of two.
11) What size pocket do I need to rout in the door edge for the Ives FB32 flush bolt?
The flush bolt body measures W: 1 inch, L: 6-3/4 inches, D: 2 inches, and it mortises into the edge of the inactive leaf at a 3/4 inch backset. Confirm the leaf has clearance for the 2 inch depth before routing, since that is the dimension that catches installers on thinner or lighter-gauge metal doors.
12) Is an automatic flush bolt or a manual flush bolt the right choice for my pair of doors?
Automatic is the choice when the inactive leaf has to secure itself without anyone thinking about it. The FB32 extends and retracts off the movement of the active leaf, so the inactive door is latched whenever the pair is closed, and staff cannot leave it unbolted. Manual flush bolts, like the ABH 1854 manual set with fire bolt or the ABH 1855S single, are for a leaf that stays fixed most of the time and only gets opened deliberately for moving equipment or stock. Manual sets are simpler to install and adjust; automatic sets are what egress and life safety inspections usually push you toward on a public opening.
13) Is a Trimco 3999 or a 6 inch corner mount flush bolt a substitute for the Ives FB32?
They serve a different purpose. The Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end and the Trimco 3999SE is the square end version of the same corner mount bolt; the Orca 86SQ is a 6 inch flush bolt with radius corners. Those are manually thrown bolts. The Ives FB32/FB33 is an automatic bolt built to ANSI A156.3 Type 25 with an auxiliary fire latch that removes the need for a bottom bolt on a metal door pair, so a corner mount bolt will not reproduce that automatic sequence.
14) What is the difference between the Ives FB32 and the Adams Rite MS1880 or MS2180 two-point flushbolts?
The Adams Rite MS1880/MS1881 are two-point flushbolts with an interlock mechanism and the MS2180 Series is an auto-release two-point flushbolt with a Smartlock mechanism, so both drive two bolt points from one unit. The Ives FB32/FB33 is a single top bolt with an auxiliary fire latch replacing the bottom bolt, non-handed, with a 3/4 inch throw, 7/8 inch vertical adjustment and 3/4 inch backset on metal doors.
15) I am matching decorative hardware on a residential pair of doors. Is the Ives FB32 the right flush bolt?
It is a commercial-duty part. The Ives FB32/FB33 is a commercial automatic flush bolt in brass or stainless steel for metal doors. For a decorative residential pair, the Emtek Flush Bolts line and the Delaney solid brass bolts are the alternatives, including the Delaney 7 inch slide type mortise flush bolt and the Delaney 7 inch mortise extension flush bolt.
16) How hard is the Ives FB32 to operate compared to a spring loaded flush bolt?
Actuation force is low by design: the top bolt runs with no spring tension, so the active leaf is not fighting a spring every time it closes. That matters on openings where closer force is already marginal or where you have accessibility concerns about the operating effort on the pair.
17) What finishes does the Ives FB32/FB33 automatic top bolt come in?
Seven finishes, and each one is available on both the FB32 and the FB33 retrofit version: 605 bright brass, 606 satin brass, 612 satin bronze, 613 satin bronze oil-rubbed, 622 matte black, 629 bright stainless steel, and 630 satin stainless steel. For matching the rest of a commercial opening, 630 satin stainless is the usual pairing with US32D hardware; the body is brass or stainless steel underneath.
How fast can I get the Ives FB33 12 MD 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 FB33 12 MD US32D come with a warranty?
Absolutely. The Ives FB33 12 MD 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 FB33 12 MD 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
Why buy the Ives FB33 12 MD US32D from ZenSupply?
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