Cal-Royal AUXAUTOFL Automatic ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$166.95
Cal-Royal Cal-Royal AUXAUTOFL Door Automatic Flush Bolts CAL-AUXAUTOFL-1

Cal-Royal AUXAUTOFL Automatic Flush Bolt Set with Auxiliary Fire Latch

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Model: AUXAUTOFLM1-US26D-1
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$166.95
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Cal-Royal AUXAUTOFL Automatic Flush Bolt Set with Auxiliary Fire Latch

The Cal-Royal AUXAUTOFL Automatic Flush Bolt Set delivers reliable top-and-bottom door securing for pairs of doors in commercial applications. Each set includes 1 Auto Flush Bolt (Top) and 1 Auxiliary Fire Latch (Bottom), constructed from durable steel for long-term commercial performance. Available in two configurations — AUXAUTOFLM1 and AUXAUTOFLW22 — to match different face plate and bolt throw requirements, this flush bolt set is designed for use on inactive leaves of paired commercial doors.

Key Features

  • AUXAUTOFLM1 Auto Flush Bolt Dimensions: Face Plate 1" × 6 3/4", Bolt Head 1/2" Square, Bolt Throw 3/4", Fastener #8 × 1" for precise fit and secure engagement.
  • AUXAUTOFLM1 Auxiliary Latch Dimensions: Face Plate 1" × 1 3/4", Body 7/8" bore × 3 1/4" Deep for reliable bottom latching.
  • AUXAUTOFLW22 Auto Flush Bolt Dimensions: Face Plate 1" × 8 1/2", Bolt Head 1/2" Square, Bolt Throw 1", Fastener #8 × 3/4" for applications requiring a longer face plate and deeper bolt throw.
  • AUXAUTOFLW22 Auxiliary Latch Dimensions: Face Plate 1" × 1 3/4", Body 7/8" bore × 3 1/4" Deep matching the auxiliary fire latch specification.
  • Heavy-Duty Steel Construction: Both the auto flush bolt and auxiliary fire latch components are manufactured from steel for durability in commercial door applications.
  • Complete Two-Piece Set: Includes both the top-mounted automatic flush bolt and the bottom-mounted auxiliary fire latch as a matched, ready-to-install pair.
  • Two Configuration Options: Choose between AUXAUTOFLM1 and AUXAUTOFLW22 configurations to match specific face plate length and bolt throw needs for your door preparation.
  • Manufacturer Installation Templates: Dedicated installation templates are provided for both the AuxautoFLM-1 and AuxAutoFLW-22 configurations to support accurate door preparation.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Flush Bolts
  • Product Type: Flush Bolts
  • Commercial/Residential: Commercial
  • Subcategory: Flush Bolts
  • Product Category: Door Trim and Accessories
  • Department: Door Hardware

Typical Applications

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

Why Cal-Royal AUXAUTOFL?

Cal-Royal AUXAUTOFL flush bolt sets are built from steel components engineered for dependable, repeated use on commercial door pairs. With precise bolt head, bolt throw, and face plate dimensions specified for both the AUXAUTOFLM1 and AUXAUTOFLW22 configurations, this set is engineered for demanding commercial applications where consistent latching performance and accurate door preparation are essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Flush Bolts
Product Type:
Flush Bolts
Commercial/Residential:
Commercial
Subcategory:
Flush Bolts
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal AUXAUTOFLM1-US26D-1 – Frequently Asked Questions

1) What is the difference between the Cal-Royal AUXAUTOFLM1 and AUXAUTOFLW22 flush bolt sets?
Face plate length and bolt throw are what separate them. The AUXAUTOFLM1 auto flush bolt has a 1 x 6-3/4 inch face plate with a 3/4 inch bolt throw and uses #8 x 1 inch fasteners. The AUXAUTOFLW22 has a longer 1 x 8-1/2 inch face plate with a 1 inch throw and #8 x 3/4 inch fasteners. Both use a 1/2 inch square bolt head, and both ship with the same auxiliary fire latch: 1 x 1-3/4 inch face plate, 7/8 inch bore by 3-1/4 inch deep body. Pick by the mortise pocket your door prep already has, or by how much throw you need into the head frame.
2) Does the Cal-Royal AUXAUTOFL flush bolt set work on wood doors or hollow metal doors?
Both. The AUXAUTOFL set is ordered with an application option of For Wood or For Metal, so specify which door construction you are prepping when you order. The two versions differ in the fastening and prep suited to each material, so get the right one for the leaf you are working on.
3) Where does the Cal-Royal AUXAUTOFL set install on a pair of doors?
On the inactive leaf. The set is two pieces: the automatic flush bolt mortises into the top of the inactive door and throws into the head frame, and the auxiliary fire latch mortises into the bottom edge. The auto bolt retracts on its own when the active leaf opens and re-projects when the active leaf closes against it, so nobody has to reach up and work a lever bolt. The active leaf carries the lock or exit device and latches into the inactive leaf's edge.
4) What is the closest alternative to the Cal-Royal AUXAUTOFL automatic flush bolt with auxiliary fire latch?
The Ives FB42 WD is the direct counterpart: a top automatic flush bolt for wood doors with an auxiliary fire latch, the same top-plus-auxiliary arrangement. The Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw, matching the throw on the AUXAUTOFLM1 version. For metal doors, the ABH 1860P/1862P automatic flush bolt pair is the equivalent automatic option. The Cal-Royal is the one to stay with if you want a single part number covering both wood and metal prep in six finishes.
5) I need the inactive leaf to be key controlled, not automatic. Is the Cal-Royal AUXAUTOFL the right choice?
No. The AUXAUTOFL is an automatic set, meaning the top bolt is driven by the active leaf, not by a key or a lever. If you need the inactive leaf locked down under key control, look at cylinder-operated flushbolts instead: the Adams Rite 1870 Series is cylinder operated with key control, and the Adams Rite 1877 is the cylinder-operated version for paired wood doors. For a two-point setup the Adams Rite MS1880/MS1881 uses an interlock mechanism, and the MS2180 Series is an auto-release two-point flushbolt.
6) I need an automatic flush bolt set for a wood door pair with a 3/4 inch throw - what are my options besides Cal-Royal?
The Ives FB41 is an automatic flush bolt set for wood doors with a 3/4 inch throw and a 90 minute fire rating. The Cal-Royal AUXAUTOFLM1 configuration also gives a 3/4 inch bolt throw, on a 1 inch by 6 3/4 inch face plate with a 1/2 inch square bolt head, and is ordered in a For Wood version. The FB41 is a set of automatic bolts; the Cal-Royal set pairs one automatic top bolt with an auxiliary fire latch at the bottom.
7) My opening needs manual flush bolts, not automatic - what should I order instead of the Cal-Royal AUXAUTOFL?
For manual operation on a metal door pair, the ABH 1854 Series is a manual flush bolt set supplied with a fire bolt, which mirrors the top-bolt-and-bottom-fire-component arrangement of the Cal-Royal AUXAUTOFL but requires the bolt to be thrown by hand. The Ives FB358 is a manual flush bolt with a 3/4 inch throw and 1/2 inch bolt diameter, matching the 3/4 inch throw of the Cal-Royal AUXAUTOFLM1 configuration. Manual bolts change how the inactive leaf is operated, so confirm the opening's code requirements before substituting.
8) Do I need to order the bottom bolt separately with the Cal-Royal AUXAUTOFL?
No. The AUXAUTOFL ships as a matched two-piece set, top automatic flush bolt plus bottom auxiliary fire latch, ready to install together. You are not buying two line items. What is not in the box is the strike work in your frame and threshold and any door prep, so plan the mortise from the Cal-Royal installation templates published for the AuxautoFLM-1 and AuxAutoFLW-22 configurations.
9) What does the auxiliary fire latch on the bottom actually do?
It is the bottom latching point on the inactive leaf, and unlike the top bolt it is not a rod-and-lever flush bolt. The body is a 7/8 inch bore by 3-1/4 inch deep mortise with a 1 x 1-3/4 inch face plate, so the prep at the bottom edge is a single bore rather than a long channel. That short prep is why auxiliary latches are used at the bottom of pairs where a full-length bottom rod is not wanted.
10) Should I use automatic flush bolts or manual flush bolts on my door pair?
Automatic bolts like the Cal-Royal AUXAUTOFL release the inactive leaf when the active leaf opens, so staff do not have to bend down or reach up to operate anything, which is why they get specified on egress pairs and in schools and healthcare. Manual flush bolts are simpler and cheaper to prep but someone has to physically throw and retract each one; ZenSupply carries those too, such as the ABH 1855S manual flush bolt with a 3/4 inch throw and the Ives FB358 manual flush bolt with a 3/4 inch throw and 1/2 inch bolt diameter. If the inactive leaf is meant to stay shut most of the year, manual is fine. If it opens regularly, go automatic.
11) Will the 3/4 inch throw on the Cal-Royal AUXAUTOFLM1 reach my head frame strike?
The AUXAUTOFLM1 throws 3/4 inch with a 1/2 inch square bolt head, and the AUXAUTOFLW22 throws a full 1 inch. Measure the gap between the top of the inactive leaf and the frame soffit, then confirm your strike pocket depth. If you have a wide head clearance or a deep frame strike, the 1 inch throw of the W22 is the safer pick; the 3/4 inch M1 is fine on tight, well hung pairs. Bolt head size is the same either way, so the strike hole size does not change between the two.
12) What size mortise do I need to cut for the Cal-Royal AUXAUTOFL top bolt?
That depends on which configuration you order. The AUXAUTOFLM1 top bolt has a 1 x 6-3/4 inch face plate, so the pocket and face routing follow that footprint; the AUXAUTOFLW22 needs a longer 1 x 8-1/2 inch face plate. The bottom auxiliary fire latch is the same on both, a 7/8 inch bore drilled 3-1/4 inches deep with a 1 x 1-3/4 inch face plate. Cal-Royal publishes separate installation templates for the AuxautoFLM-1 and AuxAutoFLW-22, and you should prep to the template for the one you ordered.
13) I only need to replace the bottom fire latch, not the whole Cal-Royal AUXAUTOFL set - what can I buy on its own?
The ABH 1858 is a universal bottom fire bolt, manual operation, sold as a single bottom component. The Cal-Royal AUXAUTOFL is supplied as a matched two-piece set - one automatic top flush bolt plus one auxiliary fire latch with a 1 inch by 1 3/4 inch face plate and a 7/8 inch bore by 3 1/4 inch deep body - so buying it to service only the bottom means taking the top bolt as well. Check that the existing door bore matches before swapping in a different bottom component.
14) Which flush bolts look like a substitute for the Cal-Royal AUXAUTOFL but will not work the same way?
Several flush bolts in the same family are manual, edge- or corner-mounted units with no automatic action and no auxiliary fire latch: the Trimco 3999 and 3999SE are 6 inch corner mount flushbolts with rounded and square ends respectively, the Orca Hardware 86SQ is a 6 inch flush bolt with radius corners, and the Delaney 4108 is a 6 inch square end solid brass flush bolt. The Delaney 4101 is a 7 inch slide type mortise-in flush bolt. None of these self-retract when the active leaf opens the way the Cal-Royal AUXAUTOFL automatic top bolt does, and none include the bottom auxiliary fire latch.
15) We want key control over the inactive leaf - is there an alternative to the Cal-Royal AUXAUTOFL that a cylinder operates?
Yes. 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 put the bolt under a keyed cylinder rather than the automatic action of the Cal-Royal AUXAUTOFL, which throws its top bolt as the doors close and pairs it with an auxiliary fire latch at the bottom. Cylinder operation adds a keying decision the Cal-Royal set does not involve.
16) What is a two-point flushbolt alternative for an aluminum-style paired opening instead of the Cal-Royal AUXAUTOFL?
Adams Rite offers two-point flushbolts: the MS1880/MS1881 with an interlock mechanism, and the MS2180 Series auto-release two-point flushbolt with a Smartlock mechanism. These operate both bolts from a single point, where the Cal-Royal AUXAUTOFL is a two-piece set with an independent automatic top bolt and an auxiliary fire latch at the bottom, offered in For Metal and For Wood versions.
17) The Cal-Royal AUXAUTOFL throw is too deep for my undercut - what has a shorter throw?
The International Door Closers FB-1202 is a flush bolt with a 5/8 inch throw, a positive U joint actuator, 1/8 inch offset with 7/8 inch backset, and a square end with guide. That is shallower than either Cal-Royal AUXAUTOFL configuration, which throw 3/4 inch (AUXAUTOFLM1) and 1 inch (AUXAUTOFLW22). The ABH 1855S is a single manual flush bolt for metal doors with a 3/4 inch throw if you want to stay at the shallower of the two Cal-Royal figures.
18) What finishes does the Cal-Royal AUXAUTOFL automatic flush bolt come in?
Six: US1 flat black, US3 polished brass, US4 satin brass, US10B antique bronze oiled, US26 polished chrome and 26D satin chrome. Every one of those is offered in both the wood-door and metal-door version, so you can match the bolt face plates to the lockset and hinges already hanging on the rest of the openings without changing door construction.
19) Is the Cal-Royal AUXAUTOFL flush bolt set suitable for a residential double door?
It is built and sold as commercial hardware, steel construction for repeated use on commercial door pairs, and the typical applications are offices, schools, healthcare, retail, warehouses, multi-tenant residential and government buildings. It will physically work on a residential pair, but for a decorative interior double door a lighter flush bolt is the usual choice, such as the Delaney 6 inch square end solid brass flush bolt or the Trimco 3999 6 inch corner mount rounded end flushbolt.
20) Is there a flush bolt with a longer rod than the Cal-Royal AUXAUTOFL for a tall metal door pair?
The Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors, which suits taller openings where the bolt must reach further up the leaf. The Cal-Royal AUXAUTOFL is a compact set instead - the AUXAUTOFLW22 auto flush bolt uses a 1 inch by 8 1/2 inch face plate with a 1 inch throw, and the AUXAUTOFLM1 a 1 inch by 6 3/4 inch face plate with a 3/4 inch throw. The FB457 is manually operated, so the operation of the inactive leaf changes with the swap.
How fast can I get the Cal-Royal AUXAUTOFLM1-US26D-1 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 Cal-Royal AUXAUTOFLM1-US26D-1 come with a warranty?
Absolutely. The Cal-Royal AUXAUTOFLM1-US26D-1 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 Cal-Royal AUXAUTOFLM1-US26D-1?
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Why buy the Cal-Royal AUXAUTOFLM1-US26D-1 from ZenSupply?
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