Hager 403S Mill Finish Aluminu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$30.84
$23.67
Hager 403S Mill Finish Aluminum Saddle Threshold - 4" Width

Hager 403S Mill Finish Aluminum Saddle Threshold - 4" Width

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Model: 403SMIL36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$30.84
$23.67
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Hager 403S Mill Finish Aluminum Saddle Threshold - 4" Width

Professional Door Threshold Solution

The Hager 403S saddle threshold delivers reliable door sealing and accessibility compliance with durable aluminum construction. This 4" wide threshold features a low-profile 1/4" height design and mill finish for commercial applications. BHMA certified for handicap accessibility and UL listed for fire-rated applications, ensuring code compliance in demanding environments.

Professional Features & Benefits

  • Low-Profile Design: 1/4" (6.4 mm) height provides smooth transition while maintaining accessibility compliance for wheelchair and mobility device users.
  • Standard Width: 4" (101.6 mm) width accommodates most standard door frame configurations for versatile installation options.
  • Durable Aluminum Construction: Aluminum material provides corrosion resistance and long-term durability for high-traffic commercial applications.
  • BHMA Accessibility Certification: BHMA certified handicap accessibility ensures compliance with ADA requirements and accessibility standards.
  • Fire-Rated Compliance: UL listed for use in fire-rated door assemblies maintaining building safety and code compliance.
  • Optional Non-Slip Surface: Available with Sure-Step non-slip abrasive coating for enhanced safety in wet or high-traffic conditions.
  • Manufacturer Warranty: Five-Year Warranty provides long-term protection and confidence in product performance.

Technical Specifications

  • Certifications: BHMA Certified Handicap Accessibility
  • Commercial/Residential: Commercial
  • Fasteners: #10 x 1-1/2” sheet metal screws, other screw types and anchors available upon request
  • Finishes: BLA, MIL, DBA
  • Fire Rating: UL Listed
  • Height: 1/4" (6.4 mm)
  • Material: Aluminum
  • Notes: MIL finish thresholds are supplied with zinc plated screws; Color anodized thresholds are supplied with screws plated to match
  • Options: Available with Sure-Step non-slip abrasive coating
  • Subcategory: Door Thresholds
  • Warranty: Five-Year Warranty
  • Width: 4" (101.6 mm)

Installation & Operation

  1. Review manufacturer specifications and verify door frame preparation requirements including width and depth dimensions for proper threshold seating.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door frame and floor surfaces.
  3. Prepare installation area by ensuring level, clean surfaces and drilling required holes per manufacturer specifications.
  4. Install threshold using provided #10 x 1-1/2" sheet metal screws, ensuring proper alignment and secure attachment to frame and floor.
  5. Adjust threshold position for proper door clearance and smooth operation throughout the full range of door movement.
  6. Test door operation to verify proper clearance and sealing function. Refer to manufacturer documentation for complete installation details and specifications.

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 Hager Quality?

Hager threshold products deliver professional-grade reliability with durable aluminum construction and BHMA accessibility certification. Five-Year Warranty coverage provides added confidence and protection for commercial installations. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

Door sealing solutions for smoke, light, air, and sound control. Positive-pressure-tested gasketing available for fire door assemblies.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Thresholds - Saddle
Commercial/Residential:
Commercial
Subcategory:
Door Thresholds
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Hager 403SMIL36 – Frequently Asked Questions

1) Will the Hager 403S threshold meet ADA accessibility for a wheelchair-accessible opening?
At 1/4 inch (6.4 mm) high, the 403S saddle sits below the 1/2 inch change in level that triggers a beveled-edge requirement, and it carries BHMA certified handicap accessibility. That is the number to put on a submittal for a barrier-free opening in a school, clinic, or government building.
2) What lengths does the Hager 403S 4-inch saddle threshold come in, and will one cover a double door?
Two lengths are stocked: 36 inch and 72 inch, both in milled aluminum. A 36 inch piece covers a standard 3-0 single door. For a pair of doors, take the 72 inch and cut it to the full opening width so you get one continuous saddle across both leaves instead of a seam at the meeting stile.
3) Do screws come with the Hager 403S threshold, or do I need to order anchors separately?
The 403S ships with #10 x 1-1/2 inch sheet metal screws. On the mill finish, those screws are zinc plated; color anodized thresholds come with screws plated to match the finish. If you are setting into concrete rather than a wood or metal sub-floor, other screw types and anchors are available on request, so call that out when you place the order.
4) Is a 4-inch wide saddle threshold wide enough, or do I need a 6-inch?
The 403S is 4 inches (101.6 mm) wide, which fits a typical single-rabbet frame with a bit of bearing on each side of the door. Go wider when the frame is a double-rabbet or the floor transition needs more coverage under the sweep path: the Pemko 272 Series is a 1/4 inch x 6 inch flat saddle, and the NGP 1013 runs 1/4 inch x 10 inch, both at the same low 1/4 inch height so the accessibility profile does not change.
5) What threshold should I use on a fire-rated opening instead of the Hager 403S?
The Hager 403S is itself UL listed for use in fire-rated door assemblies, so it is not automatically off the table. Among the alternatives, the Cal-Royal CR2000 saddle threshold is fire rated and ADA compliant, and the Cal-Royal CR3700 carries a 3-hour positive pressure fire rating. The CR3700 is the one to specify when the opening is under a positive pressure test requirement and you need a stated 3-hour rating on the threshold rather than a UL listing alone.
6) Is the NGP 653 a substitute for a Hager 403S?
No - the NGP 653 is an offset threshold, not a flat saddle, and it stands 1/2 inch by 5-1/2 inch in aluminum alloy. An offset profile steps up on one side and is meant for an opening where the two floor levels differ or a door needs a stop face against it. The Hager 403S is a flat saddle at 1/4 inch (6.4 mm) height, which is what you want when the buyer needs a smooth level transition across the opening. Swapping a 1/2 inch offset in where a flat 1/4 inch saddle was specified changes both the rise underfoot and how the door bottom meets it.
7) What is the closest equivalent to a Hager 403S saddle threshold from another maker?
The Pemko 272 is the nearest match in profile. It is a flat saddle threshold at 1/4 inch height in aluminum, the same 1/4 inch (6.4 mm) rise the Hager 403S uses, and it is ADA compliant. The difference is the run of the plate across the opening: the Pemko 272 is 6 inches wide, while the 403S is 4 inches (101.6 mm). If the floor transition and frame depth were laid out for a 4 inch saddle, the 403S drops in; if you have a wider gap to cover between two floor finishes, the 6 inch Pemko covers more of it.
8) I need a wider saddle plate than 4 inches to bridge a floor transition - what else is there?
Two go wider. The Pemko 272 is a 1/4 inch by 6 inch flat saddle in heavy-duty aluminum, and the NGP 1013 is a 1/4 inch by 10 inch mill aluminum saddle. Both hold the same 1/4 inch height as the Hager 403S at 4 inch width (101.6 mm), so the rise over the floor does not change as you step up in width - only how much floor the plate spans. The NGP 1013 at 10 inches is the one to reach for across a wide sill or a double-door opening; the 272 at 6 inches is a modest step up from 4.
9) The building floor gets wet at the entry. Can I get the Hager 403S with a non-slip surface?
Yes. Sure-Step non-slip abrasive coating is an option on the 403S, which is worth adding at entry vestibules, kitchens, locker rooms, and anywhere the floor tracks water. Mill finish aluminum on its own can get slick underfoot when wet.
10) What finishes does the Hager 403 saddle threshold come in besides mill aluminum?
Three finishes are offered on the 403 saddle: MIL (mill aluminum), BLA (black anodized), and DBA (dark bronze anodized). Mill is the mill-finish aluminum most commonly used on service and back-of-house openings; the anodized finishes are what to specify when the threshold has to read with dark bronze or black storefront and frames at a main entrance.
11) I need one saddle threshold standardized across a whole facility. Is the Hager 403S the right pick, or should I look at a positive-pressure rated one?
For standardizing across a portfolio, the 403S covers the common case: aluminum, 4 inch wide, 1/4 inch high, BHMA certified for handicap accessibility, and UL Listed for fire-rated assemblies. Where a specific opening has to meet a positive-pressure fire test, the Cal-Royal CR3700 Series carries a 3-hour positive pressure fire rating, and the Cal-Royal CR2000 Series is another fire-rated, ADA-compliant saddle line. Match the threshold to what the door assembly listing calls for on the labeled openings and run the 403S on the rest.
12) Can I cut a Hager 403S threshold down to fit my opening?
Yes, aluminum saddle thresholds are cut to the opening on site, which is why the 72 inch length is stocked alongside the 36 inch. Cut it to the frame width, then dry-fit and mark the anchor holes off the actual opening rather than assuming a hole pattern. Drill, then set it with the supplied #10 x 1-1/2 inch screws and check the door swings clear over it before final tightening.
13) Will a 1/4 inch high saddle threshold leave a gap under my door?
It will if the door was undercut for carpet or an existing taller threshold. The 403S only raises the floor line by 1/4 inch, so it seals against the door bottom rather than filling a large gap on its own. On an exterior opening, pair it with a door bottom sweep or automatic door bottom sized to close the remaining clearance. Hager's gasketing line includes positive-pressure-tested products for fire door assemblies if the opening is labeled.
14) Which of these thresholds actually meet ADA for a wheelchair-accessible entry?
The Hager 403S is BHMA certified for handicap accessibility and its 1/4 inch (6.4 mm) height keeps the rise low enough for wheelchair and mobility device passage. The NGP 1013 is BHMA certified as well and shares the 1/4 inch height at 10 inch width; the Pemko 272 and the Cal-Royal CR2000 are both stated ADA compliant. If you are standardizing accessible entries across a facility, all four sit in that group - pick on plate width and on whether you need a stated fire rating with it.
15) I have a mill finish aluminum threshold on the other doors - what matches it?
The Hager 403S in mill finish aluminum is offered in 36 inch and 72 inch lengths at 4 inch width, and mill finish units ship with zinc plated screws. The NGP 1013 is also a mill aluminum saddle, at 1/4 inch by 10 inch, if you need a wider plate in the same uncoated aluminum look. Mill finish is the raw aluminum surface, so the two read the same across a run of doors even though the plate widths differ.
16) What is the difference between the Cal-Royal CR2000 and CR3700 saddle thresholds?
Both are Cal-Royal saddle thresholds. The CR2000 series is fire rated with an ADA compliant design; the CR3700 series is rated for 3-hour positive pressure fire conditions. The CR3700 is what a specification calls out when the assembly must hold under positive pressure testing for three hours, which is a narrower requirement than a general fire rating.
17) The floor gets wet at this entry - is there a non-slip option or should I switch products?
You do not have to switch. The Hager 403S is available with Sure-Step non-slip abrasive coating, which is the answer for wet or high-traffic entries while keeping the same 4 inch (101.6 mm) wide, 1/4 inch (6.4 mm) high aluminum saddle profile you already specified. That keeps the accessible rise and the frame prep unchanged, where moving to a different series would change the plate dimensions.
How fast can I get the Hager 403SMIL36 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 Hager 403SMIL36 come with a warranty?
Absolutely. The Hager 403SMIL36 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 Hager 403SMIL36?
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 Hager 403SMIL36 from ZenSupply?
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