Cal-Royal AUXSLAFL Self-Latchi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$164.88
Cal-Royal Cal-Royal AUXSLAFL Door Self-Latching Flush Bolts CAL-AUXSLAFL

Cal-Royal AUXSLAFL Self-Latching Flush Bolts with Auxiliary Fire Latch

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Model: AUXSLAFLM3 -US26D
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$164.88
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Cal-Royal AUXSLAFL Self-Latching Flush Bolts with Auxiliary Fire Latch

The Cal-Royal AUXSLAFL Self-Latching Flush Bolts combine a top-mounted self-latching bolt with a bottom auxiliary fire latch for reliable door securing on fire-rated commercial door assemblies. Available in the AUXSLAFLM3 configuration with a 1" x 6 3/4" self-latching face plate and the AUXSLAFLW4 configuration with a 1" x 8 1/2" self-latching face plate, both models feature a 1/2" square bolt head, 3/4" bolt throw, and durable steel construction. Each configuration pairs with a 1" x 1 3/4" auxiliary latch face plate, with bore depth varying by model to suit different door preparations.

Key Features

  • Self-Latching Face Plate (AUXSLAFLM3): 1" x 6 3/4" face plate for standard door preparation applications.
  • Self-Latching Face Plate (AUXSLAFLW4): 1" x 8 1/2" face plate for wider door preparation applications.
  • Bolt Head Dimensions: 1/2" square bolt head on both models for consistent, secure engagement.
  • Bolt Throw: 3/4" bolt throw provides positive latching action.
  • Fastener Specification: #8 x 3/4" fasteners included for secure mounting to the door.
  • Auxiliary Latch Face Plate: 1" x 1 3/4" face plate common to both AUXSLAFLM3 and AUXSLAFLW4 configurations.
  • Auxiliary Latch Body (AUXSLAFLM3): 7/8" bore x 3 1/4" deep body for M3 door preparation.
  • Auxiliary Latch Body (AUXSLAFLW4): 7/8" bore x 3 3/4" deep body for W4 door preparation.
  • Heavy-Duty Steel Construction: Steel material used in the self-latching bolt component for long-term durability in commercial door applications.
  • Dual-Function Design: Combines a self-latching bolt at the top with an auxiliary fire latch at the bottom for coordinated door securing performance.

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 AUXSLAFL?

Cal-Royal AUXSLAFL flush bolts deliver dependable dual-latching performance through precise steel construction and exact bolt throw and face plate dimensions engineered for commercial door assemblies. With two configurations covering different door preparation widths and bore depths, this flush bolt set offers the flexibility needed for demanding commercial installations where consistent self-latching and auxiliary fire latch function 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 AUXSLAFLM3 -US26D – Frequently Asked Questions

1) Will Cal-Royal AUXSLAFL self-latching flush bolts work on a pair of wood doors, or are they metal door only?
Both. The AUXSLAFL set is ordered with an Application Option of either For Wood or For Metal, so specify the door material when you order. Pick the wrong one and the mortise prep will not match the body. Finish choices are the same either way: US1 Flat Black, US10B Antique Bronze Oiled, and 26D Satin Chrome.
2) What is the difference between the Cal-Royal AUXSLAFLM3 and AUXSLAFLW4 flush bolts?
Stile width and bore depth. The AUXSLAFLM3 uses a 1 x 6-3/4 inch self-latching face plate with a 7/8 inch bore x 3-1/4 inch deep auxiliary latch body. The AUXSLAFLW4 uses a longer 1 x 8-1/2 inch face plate with a 7/8 inch bore x 3-3/4 inch deep body. Everything else matches: 1/2 inch square bolt head, 3/4 inch throw, and a 1 x 1-3/4 inch auxiliary latch face plate on both. Measure the door edge prep you have, or the stile you are cutting into, and choose on face plate length first.
3) Self-latching flush bolt or manual flush bolt on a pair of fire doors?
Self-latching is the one you want where the inactive leaf has to relatch itself every time it closes, with no one pushing a lever down. The AUXSLAFL does that at the top and adds an auxiliary fire latch at the bottom, so the bottom leaf secures without a floor strike being dogged open. A manual set like the ABH 1854 Series or the Ives FB358 is cheaper prep and fine on an inactive leaf that stays shut for months at a time, but somebody has to throw it by hand and on a fire pair that is exactly the step that gets skipped.
4) I need to be able to key the inactive leaf. Does the Cal-Royal AUXSLAFL do that, and what does?
The Cal-Royal AUXSLAFL is a self-latching bolt with an auxiliary fire latch and is operated by the door closing, not by a key. When the opening needs key control over the inactive leaf, 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. Locksmiths specifying a keyed inactive leaf on a wood pair should be looking at the 1877.
5) What is the equivalent of the Cal-Royal AUXSLAFL top automatic flush bolt with auxiliary fire latch for wood doors?
The Ives FB42 is the closest equivalent: it is a top automatic flush bolt for wood doors with an auxiliary fire latch, the same top-bolt-plus-bottom-auxiliary-latch pairing the AUXSLAFL uses. The Cal-Royal AUXSLAFL is ordered in a For Wood application option, so both cover a paired wood door opening where the inactive leaf needs to latch itself and carry an auxiliary fire latch at the bottom.
6) What flush bolt set should I use on a pair of metal doors instead of the Cal-Royal AUXSLAFL?
For hollow metal leaves, the ABH 1854 Series is a flush bolt set with a fire bolt for metal doors, and the Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors. The Cal-Royal AUXSLAFL itself is ordered in a For Metal application option as well, so the metal-door decision is between a self-latching Cal-Royal set and the ABH or Ives metal-door sets.
7) Is a manual flush bolt the same thing as the Cal-Royal AUXSLAFL self-latching bolt?
No. The Cal-Royal AUXSLAFL self-latches, meaning the bolt throws itself when the inactive leaf closes. A manual flush bolt such as the ABH 1855S single for metal doors with 3/4 inch throw, or the ABH 1858 universal bottom fire bolt with manual operation, has to be thrown and retracted by hand at the bolt. Both carry the same 3/4 inch throw the AUXSLAFL uses, so the difference is in how the bolt is operated, not how far it projects.
8) What is the auxiliary fire latch on the Cal-Royal AUXSLAFL for, and do I have to mortise a second pocket?
Yes, it is a separate prep. The auxiliary fire latch is its own body, 7/8 inch bore by 3-1/4 inches deep on the M3 or 3-3/4 inches deep on the W4, behind a 1 x 1-3/4 inch face plate. It goes in the bottom of the inactive leaf and holds that leaf at the sill so the pair stays latched as a unit. So the door edge takes two mortises: the long self-latching bolt at the top and the short auxiliary latch at the bottom.
9) Do Cal-Royal AUXSLAFL flush bolts come with screws, or do I need to supply fasteners?
#8 x 3/4 inch fasteners are included for mounting to the door. What is not in the box is the frame strike and sill strike; specify those separately against your frame and threshold condition. The bolt component is steel.
10) What is the closest equivalent to the Cal-Royal AUXSLAFL from another brand?
The Ives FB42 top automatic flush bolt for wood doors with auxiliary fire latch is the nearest match in intent: top bolt plus auxiliary fire latch on a wood pair. The Ives FB41 automatic flush bolt set for wood doors also carries a 3/4 inch throw, same as the AUXSLAFL. On the metal side, the ABH 1854 Series flush bolt set with fire bolt for metal doors covers the same top-plus-bottom-fire-bolt arrangement, and the ABH 1858 universal bottom fire bolt is the part to reach for if all you are replacing is the bottom latch.
11) Can I use the Cal-Royal AUXSLAFL on a single door, or does it need a pair?
It needs a pair. A flush bolt mortises into the edge of the inactive leaf and throws into the frame head and the sill, so it only makes sense where there is an inactive leaf holding still for the active leaf to latch against. On a single door you want a lock or an exit device instead. If your pair has a center mullion, the inactive leaf is already dead and you do not need flush bolts at all.
12) Will a decorative brass flush bolt work in place of the Cal-Royal AUXSLAFL on a fire-rated opening?
Different animal, and no. Parts like the Delaney 6 inch square end solid brass flush bolt or the Orca Hardware 6 inch flush bolt with radius corners are manual slide bolts sized for residential and light interior pairs. The AUXSLAFL is a commercial part built around a self-latching top bolt plus an auxiliary fire latch, in steel. If the opening is a fire-rated commercial pair, stay with a set that includes the auxiliary fire latch.
13) What is the difference between the Cal-Royal AUXSLAFL and an automatic flush bolt pair like the ABH 1860P?
The ABH 1860P/1862P is an automatic flush bolt pair, fire rated 3-hour, with a thermal lock. The Ives FB41 is an automatic flush bolt set for wood doors with 3/4 inch throw and a 90 minute fire rating. Those are sold as complete top-and-bottom bolt pairs. The Cal-Royal AUXSLAFL instead combines one self-latching bolt at the top with an auxiliary fire latch at the bottom, and its 3/4 inch throw matches the FB41. Which you specify depends on whether the opening calls for two bolts or a bolt plus an auxiliary latch.
14) What is a simpler alternative to the Cal-Royal AUXSLAFL for a non-fire-rated paired door?
A plain corner-mount or mortise flush bolt is the simpler route. The Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end and the Trimco 3999SE is the 6 inch corner mount square end version; the Orca Hardware 86SQ Series is a 6 inch flush bolt with radius corners, and the Delaney 4108 is a 6 inch square end solid brass flush bolt. These are single bolts without the auxiliary fire latch the Cal-Royal AUXSLAFL pairs with its self-latching bolt.
15) How does the Cal-Royal AUXSLAFL face plate length compare to a standard 6 inch flush bolt for door prep?
The Cal-Royal AUXSLAFL is offered with a 1 inch by 6 3/4 inch self-latching face plate in the AUXSLAFLM3 configuration and a 1 inch by 8 1/2 inch face plate in the AUXSLAFLW4 configuration. Common flush bolts run shorter faces: the Trimco 3999SE and the Orca 86SQ are 6 inch, and the Delaney 4101 slide type mortise-in and Delaney 4363 mortise extension are 7 inch. If an existing mortise was cut for a 6 inch plate, the AUXSLAFLW4 at 8 1/2 inch will need the prep lengthened.
16) Does the Cal-Royal AUXSLAFL throw as far as an Ives FB358 or an International Door Closers FB-1202?
The Cal-Royal AUXSLAFL has a 3/4 inch bolt throw with a 1/2 inch square bolt head. The Ives FB358 manual flush bolt also runs a 3/4 inch throw with a 1/2 inch bolt diameter, so the engagement into the strike is comparable. The International Door Closers FB-1202 is a 5/8 inch throw with a 1/8 inch offset and 7/8 inch backset, so it projects less far and is prepped differently.
17) Can I use a two-point flushbolt in place of the Cal-Royal AUXSLAFL?
A two-point flushbolt is a different mechanism. The Adams Rite MS1880/MS1881 are two-point flushbolts with an interlock mechanism, and the Adams Rite MS2180 Series is an auto-release two-point flushbolt with a Smartlock mechanism; both secure the leaf at two points from one operation. The Cal-Royal AUXSLAFL is a top self-latching bolt with a separate bottom auxiliary fire latch, each mortised into its own prep, so the door preparation is not interchangeable between them.
18) I only need to replace the bottom fire latch on a pair, not the whole set. What are my options next to the Cal-Royal AUXSLAFL?
The ABH 1858 is a universal bottom fire bolt with manual operation, sold as the bottom component. The Cal-Royal AUXSLAFL is supplied as a matched pairing, a self-latching bolt at the top with a 1 inch by 1 3/4 inch auxiliary latch face plate at the bottom, with the auxiliary latch body a 7/8 inch bore 3 1/4 inch deep on AUXSLAFLM3 and 7/8 inch bore 3 3/4 inch deep on AUXSLAFLW4 - so matching the existing bottom bore depth decides whether a component swap or the full set is the right order.
19) Which finish of the Cal-Royal AUXSLAFL flush bolt will match the rest of the hardware on my doors?
Three finishes are offered: 26D Satin Chrome, US1 Flat Black, and US10B Antique Bronze Oiled. 26D is the one to standardize on if the building is running the usual commercial satin chrome exits and levers. All three are available in both the wood and metal application versions, so a mixed-door building can stay on one finish.
20) Is 3/4 inch enough throw, or should I be looking at a rod-type flush bolt?
For a standard frame head with a proper strike pocket, the AUXSLAFL 3/4 inch throw off a 1/2 inch square bolt head is the normal commercial answer and it is what most head strikes are cut for. Where you need reach rather than throw, because the bolt has to travel up past a lite or a transom prep in a tall leaf, that is a rod device: the Ives FB457 with a 12 inch rod length for metal doors is the type to specify instead.
21) Is the Emtek flush bolt a substitute for the Cal-Royal AUXSLAFL on a commercial fire-rated pair?
They serve different openings. The Cal-Royal AUXSLAFL is a commercial flush bolt set built for fire-rated commercial door assemblies, with steel construction and an auxiliary fire latch. Emtek flush bolts are a flush bolt line without a self-latching bolt or auxiliary fire latch component. For a commercial fire-rated pair, the peers to weigh against the AUXSLAFL are the ABH 1854 with fire bolt or the Ives FB42 with auxiliary fire latch.
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Does the Cal-Royal AUXSLAFLM3 -US26D come with a warranty?
Absolutely. The Cal-Royal AUXSLAFLM3 -US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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