Cal-Royal SLAUTOFL Self-Latchi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$174.04
Cal-Royal Cal-Royal SLAUTOFL Door Self-Latching Flush Bolts CAL-SLAUTOFL

Cal-Royal SLAUTOFL Self-Latching Flush Bolts with Auto Flush Bolt Combination

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Model: SLAUTOFLM3-US26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$174.04
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Cal-Royal SLAUTOFL Self-Latching Flush Bolts with Auto Flush Bolt Combination

The Cal-Royal SLAUTOFL Self-Latching Flush Bolts combine a Self-Latching Bolt (top) and an Auto Flush Bolt (bottom) into a single coordinated assembly for pairs of doors. Rated BHMA 4.4 Type 25 and constructed of steel, this combination is available in two face plate configurations — SLAUTOFLM3 with a 1" × 6 3/4" face plate for metal door applications, and SLAUTOFLW4 with a 1" × 8 1/2" face plate — giving specifiers the flexibility to match door construction requirements while maintaining consistent bolt performance top and bottom.

Key Features

  • Face Plate Dimensions: SLAUTOFLM3 measures 1" × 6 3/4", while SLAUTOFLW4 measures 1" × 8 1/2", allowing selection based on door and application size.
  • Bolt Head & Throw: Both self-latching (top) bolts feature a 1/2" square bolt head with 3/4" bolt throw for secure engagement.
  • Auto Flush Bolt Bottom Bolt Throw: SLAUTOFLM3 auto flush bolt has a 3/4" bolt throw; SLAUTOFLW4 auto flush bolt has a 1" bolt throw.
  • Fastener Specifications: SLAUTOFLM3 uses #8 × 3/4" fasteners on the self-latching bolt and #8 × 1" on the auto flush bolt; SLAUTOFLW4 uses #8 × 3/4" fasteners on both bolts.
  • Combination Bolt System: Includes a Self-Latching Bolt (top) and an Auto Flush Bolt (bottom) working together as a matched pair for coordinated door control.
  • Heavy-Duty Steel Construction: Both the self-latching and auto flush bolt components are made of steel for durable, long-term commercial performance.
  • Manufacturer Templates Available: Installation templates are provided for both SLAUTOFLM3 (metal door application) and SLAUTOFLW4 configurations to support accurate, precise installation.

Certifications & Compliance

  • BHMA 4.4 Type 25

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 SLAUTOFL?

Cal-Royal SLAUTOFL flush bolts pair steel self-latching and auto flush bolt construction with BHMA 4.4 Type 25 rated performance, delivering dependable door control for commercial pair-door installations. With precise face plate, bolt throw, and fastener specifications matched to each door application, and manufacturer templates available for accurate installation, this combination is engineered to meet the demands of high-traffic commercial environments.

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 SLAUTOFLM3-US26D – Frequently Asked Questions

1) Will the Cal-Royal SLAUTOFL flush bolts work on a pair of hollow metal doors, or do I need the wood version?
Two application versions are made, and you pick by door construction. The SLAUTOFLM3 is the metal door application with a 1 x 6 3/4 inch face plate; the SLAUTOFLW4 uses a 1 x 8 1/2 inch face plate. Both are ordered as For Metal or For Wood on the application option, so match the version to the inactive leaf you are prepping.
2) What is the difference between a self-latching flush bolt and an automatic flush bolt on a pair of doors?
On the SLAUTOFL combination you get both, one at each end of the inactive leaf. The self-latching bolt sits at the top and latches itself when the door closes. The auto flush bolt goes at the bottom and is released by the active leaf, so the inactive door frees up when the pair is opened together. Buying them as a matched combination means the top and bottom are coordinated rather than mixing two separate manufacturers' bolts in one leaf. If you want bolts that only ever move when someone throws them by hand, a manual set like the ABH 1855S single or the Ives FB358 is the other route.
3) Can I use Cal-Royal SLAUTOFL flush bolts on a fire rated pair of doors?
Fire door pairs need a bolt set carrying a fire rating, and the SLAUTOFL is specified on the BHMA 4.4 Type 25 rating for commercial pair doors. If your opening is a rated pair, order a bolt set that states the rating outright: the Ives FB41 automatic flush bolt set for wood doors is listed at 90 minutes, the ABH 1860P/1862P automatic pair is fire rated 3 hour with a thermal lock, and the ABH 1854 set includes a fire bolt for metal doors.
4) What is the closest equivalent to the Cal-Royal SLAUTOFL automatic flush bolt combination for a pair of wood doors?
The Ives FB41 is an automatic flush bolt set built for wood doors with a 3/4 inch throw, which matches the 3/4 inch throw on the SLAUTOFLM3 auto flush bolt and the 3/4 inch throw on both self-latching bolt heads. The Cal-Royal SLAUTOFL is ordered in a For Wood application option, so both cover a wood pair; the difference is that the SLAUTOFL pairs a self-latching bolt on top with the auto flush bolt on the bottom, while the FB41 is supplied as an automatic flush bolt set. The FB41 carries a 90 minute fire rating.
5) What is the difference between the Cal-Royal SLAUTOFL and a manual flush bolt like the Ives FB358?
The Ives FB358 is a manual flush bolt with a 3/4 inch throw and a 1/2 inch bolt diameter, operated by hand at each bolt. The Cal-Royal SLAUTOFL uses a self-latching bolt on top and an auto flush bolt on the bottom that work as a matched pair for coordinated door control, and its self-latching bolts use a 1/2 inch square bolt head with 3/4 inch throw. The bolt dimensions line up closely; the operation does not, so choose by whether the inactive leaf should be bolted by hand or automatically. The FB358 is fire rated.
6) Is there an automatic flush bolt pair with a 3-hour fire rating I can use in place of the Cal-Royal SLAUTOFL?
The ABH 1860P/1862P is an automatic flush bolt pair that is fire rated 3-hour with a thermal lock. The Cal-Royal SLAUTOFL is rated BHMA 4.4 Type 25 and built of steel for both the self-latching and auto flush bolt components. If the opening schedule calls out a 3-hour assembly, the 1860P/1862P is the set written for it; if the requirement is a BHMA 4.4 Type 25 self-latching and auto combination, the SLAUTOFL is the match.
7) I want key control over the inactive leaf rather than an automatic bolt. What should I specify instead of the Cal-Royal SLAUTOFL?
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 throw and retract by key, so the inactive leaf is released only by an authorized holder. The Cal-Royal SLAUTOFL instead latches the top bolt automatically as the leaf closes and drives the bottom auto flush bolt with it, with no cylinder involved. Pick the cylinder-operated flushbolt when the inactive leaf must stay under key control and the SLAUTOFL when it should secure itself on closing.
8) What screws come with the Cal-Royal SLAUTOFL flush bolts, and do I need anything else to install them?
Fasteners are supplied and they differ by version. The SLAUTOFLM3 uses #8 x 3/4 inch screws on the self-latching bolt and #8 x 1 inch on the auto flush bolt. The SLAUTOFLW4 uses #8 x 3/4 inch on both. Cal-Royal publishes installation templates for both configurations. What is not in the box is the strike work: you still need the head strike and the floor or threshold strike prepped to receive the bolts.
9) What finishes do the Cal-Royal SLAUTOFL flush bolts come in, and can I match the other doors in my building?
Three finishes are offered, and each one is available in both the metal and the wood application: US1 flat black, US10B antique bronze oiled, and 26D satin chrome. 26D is the usual commercial default and the easiest to match against existing lever trim and exit devices in a fleet of openings.
10) I want the inactive leaf locked by key instead of latching on its own. What should I use instead of an automatic flush bolt?
Automatic and self-latching bolts, including the SLAUTOFL combination, throw themselves and are not key controlled. For key control on the inactive leaf, look at cylinder-operated flushbolts: the Adams Rite 1870 Series is cylinder operated with key control, and the 1877 is the cylinder-operated flushbolt for paired wood doors. Those let a locksmith or property manager control the inactive leaf on a keyway rather than leaving it to a self-latching mechanism.
11) How long is the face plate on the Cal-Royal SLAUTOFL, and will it fit a narrow stile door edge?
Face plates measure 1 x 6 3/4 inches on the SLAUTOFLM3 and 1 x 8 1/2 inches on the SLAUTOFLW4. The 1 inch width is the dimension that matters at the door edge, so both versions need an edge that will take a 1 inch wide mortise. The difference between the two is plate length up the edge, which is what changes the mortise depth you rout or cut.
12) Do I need to order a top and bottom flush bolt separately for the Cal-Royal SLAUTOFL?
No separate ordering. The SLAUTOFL ships as a combination: one self-latching bolt for the top of the inactive leaf and one auto flush bolt for the bottom, matched to work together. You pick the application (metal or wood) and the finish, and that is the whole order for one inactive leaf. Sets sold as single bolts, like the ABH 1855S single or the ABH 1858 universal bottom bolt, are the ones you have to pair up yourself.
13) How does the Cal-Royal SLAUTOFL bolt throw compare with the International Door Closers FB-1202?
The International Door Closers FB-1202 is a flush bolt with a positive U joint actuator, a 5/8 inch throw, a 1/8 inch offset with 7/8 inch backset, square end and guide. The Cal-Royal SLAUTOFL self-latching bolts throw 3/4 inch, its SLAUTOFLM3 auto flush bolt throws 3/4 inch, and its SLAUTOFLW4 auto flush bolt throws 1 inch. If the strike or threshold prep was cut for a 5/8 inch throw, the deeper SLAUTOFL engagement needs the pocket checked before it will seat.
14) I need a top automatic flush bolt with a fire latch on a wood pair instead of a full top and bottom combination. What do I use?
The Ives FB42 is a top automatic flush bolt for wood doors with an auxiliary fire latch, so it covers the top leaf only. The Cal-Royal SLAUTOFL is supplied as a coordinated top self-latching bolt and bottom auto flush bolt together, which is the choice when both the head and the threshold need bolting from one assembly. The FB42 is fire rated.
15) Will a 6 inch corner mount flushbolt like the Trimco 3999 work where the Cal-Royal SLAUTOFL is specified?
The Trimco 3999 is a 6 inch corner mount flushbolt with a rounded end and the Trimco 3999SE is the same 6 inch corner mount in a square end. Corner mount means the bolt fastens at the corner of the leaf rather than into a mortised edge face plate. The Cal-Royal SLAUTOFL mounts through a face plate measuring 1 inch by 6 3/4 inches on the SLAUTOFLM3 or 1 inch by 8 1/2 inches on the SLAUTOFLW4, and it is a self-latching and automatic combination rather than a single manual bolt. They are not interchangeable prep, so confirm the existing door prep before swapping.
16) What is a simpler single manual flush bolt if I only need one leaf point bolted rather than the Cal-Royal SLAUTOFL combination?
The ABH 1855S is a single manual flush bolt for metal doors with a 3/4 inch throw, which is the same 3/4 inch throw carried by the SLAUTOFLM3 auto flush bolt. For a bottom bolt only on metal, the ABH 1858 is a universal bottom fire bolt with manual operation. The Cal-Royal SLAUTOFL supplies both a top self-latching bolt and a bottom auto flush bolt as one assembly, and is offered in a For Metal application option alongside For Wood.
17) What is the difference between the Cal-Royal SLAUTOFL and a two-point flushbolt like the Adams Rite MS2180?
The Adams Rite MS2180 Series is an auto-release two-point flushbolt with a Smartlock mechanism, and the Adams Rite MS1880/MS1881 is a two-point flushbolt with an interlock mechanism. A two-point flushbolt drives the top and bottom bolts from one mechanism in the leaf. The Cal-Royal SLAUTOFL is a combination of two discrete units, a self-latching bolt at the top and an auto flush bolt at the bottom, each with its own face plate and fasteners, using #8 by 3/4 inch fasteners on the self-latching bolt on both configurations. Prep and hardware count differ, so verify the leaf prep before substituting either way.
18) Can I use a solid brass residential flush bolt such as the Delaney 4108 in place of the Cal-Royal SLAUTOFL?
The Delaney 6 inch square end solid brass flush bolt and the Delaney 7 inch slide type mortise in flush bolt are manual slide and mortise bolts. The Cal-Royal SLAUTOFL is a commercial item rated BHMA 4.4 Type 25 with steel self-latching and auto flush bolt construction and is specified for settings such as healthcare institutions and government buildings. Where the opening is written to a BHMA 4.4 Type 25 self-latching requirement, the Delaney bolts do not carry that rating and are not a substitute for it.
19) I need a longer rod flush bolt for a tall metal door leaf. What do I use instead of the Cal-Royal SLAUTOFL?
The Ives FB457 is a manual flush bolt with a 12 inch rod length for metal doors and is fire rated. Rod length is what reaches the head on a taller leaf. The Cal-Royal SLAUTOFL is offered in a For Metal application option with the SLAUTOFLM3 configuration carrying a 1 inch by 6 3/4 inch face plate, but it is a self-latching and automatic combination rather than a long-rod manual bolt, so specify the FB457 where the extra rod reach is what the opening needs.
20) Are Cal-Royal SLAUTOFL flush bolts heavy duty enough for a school or hospital corridor pair?
Both the self-latching bolt and the auto flush bolt are steel, and the set is specified as commercial rather than residential. Cal-Royal calls out commercial office, education, healthcare, retail, industrial and warehouse, multi-tenant residential, and government buildings as the application range. For a high traffic corridor pair, steel bolt construction top and bottom is what you want over a decorative brass flush bolt like the Delaney 6 inch square end solid brass unit, which suits lighter residential and interior pairs.
21) What flush bolt set includes a fire bolt for a metal pair, compared to the Cal-Royal SLAUTOFL?
The ABH 1854 Series is a manual flush bolt set with a fire bolt for metal doors. The Cal-Royal SLAUTOFL covers a metal pair through its SLAUTOFLM3 configuration, which uses a 1 inch by 6 3/4 inch face plate with #8 by 3/4 inch fasteners on the self-latching bolt and #8 by 1 inch on the auto flush bolt, and is rated BHMA 4.4 Type 25. The 1854 set is operated by hand while the SLAUTOFL top bolt self-latches and the bottom bolt operates automatically.
22) Is a 6 inch radius corner flush bolt like the Orca 86SQ a match for the Cal-Royal SLAUTOFL face plate?
The Orca Hardware 86SQ is a 6 inch flush bolt with radius corners. The Cal-Royal SLAUTOFL face plates measure 1 inch by 6 3/4 inches on the SLAUTOFLM3 and 1 inch by 8 1/2 inches on the SLAUTOFLW4, so neither plate length matches a 6 inch bolt and an existing mortise cut for one will not cover. Cal-Royal provides installation templates for both SLAUTOFL configurations for laying out the correct pocket.
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Does the Cal-Royal SLAUTOFLM3-US26D come with a warranty?
Absolutely. The Cal-Royal SLAUTOFLM3-US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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