Zero International 1675A72 167...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$139.56
Zero 1675A Half Saddle Threshold – 5″ Wide x 1/2″ High – Aluminum Mill Finish

Zero International 1675A72 1675A Half Saddle Threshold – 5" Wide x 1/2" High Aluminum Mill Finish

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Model: 1675A 36

In Stock (leaves warehouse same day if ordered before 3pm ET)

$139.56
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Zero International 1675A Half Saddle Threshold – 5" Wide x 1/2" High Aluminum Mill Finish

The Zero International 1675A Half Saddle Threshold is a heavy-gauge aluminum threshold engineered for high-traffic commercial doorways and applications with extreme temperature differentials. Measuring 5" wide, 1/2" high, 36" long, and .250" thick, this half-saddle design is raised on one side to ease the transition at the door sill. Built to BHMA-certified standards and fire rated, it withstands direct drilling and screwing into concrete without the buckling or loose-screw issues common to lighter commercial materials.

Key Features

  • Threshold Dimensions: 5" wide x 1/2" high x 36" long with a .250" thickness for a substantial, heavy-duty profile.
  • Half-Saddle Design: Raised on one side to ease transition at the sill, ideal for doorways requiring a gradual step-up.
  • Heavy-Gauge Construction: Allows direct drilling and screwing into concrete without buckling under heavy loads or developing loose screws over time.
  • Adjustable System Compatibility: Notch design allows use with an adjustable threshold system for added installation flexibility.
  • Fire Rated: Suitable for use in fire-rated door assemblies and applications requiring code compliance.
  • Mill Finish Aluminum: Durable, corrosion-resistant aluminum construction with a clean mill finish suited to heavy commercial traffic.
  • BHMA Certified: Meets recognized industry certification standards for door hardware performance.

Certifications & Compliance

  • BHMA Certified
  • Fire Rated
  • ANSI: J33100, J33160, J33180

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Thresholds
  • Product Width: 5"
  • 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 Zero International 1675A?

Zero International threshold products are built from heavy-gauge aluminum designed to withstand heavy traffic and extreme temperature differentials without compromising performance. The 1675A's BHMA certification, fire rating, and compliance with ANSI J33100, J33160, and J33180 standards reflect the rigorous construction quality demanded in commercial door assemblies. Engineered for durability and precise fit, it delivers dependable, code-compliant performance at the doorway sill for years of heavy-duty service.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Commercial/Residential:
Commercial
Product Type:
Thresholds
Product Height:
1/2"
Product Width:
5"
Department:
Door Hardware

Zero International 1675A 36 – Frequently Asked Questions

1) What lengths does the Zero International 1675A half saddle threshold come in?
The 1675A comes in 36 inch and 72 inch lengths. The 36 inch covers a standard single door opening; the 72 inch is the one to order for a pair of doors or a wide opening, and it can be cut down on site to suit a non-standard frame.
2) How high does the 1675A threshold sit above the floor, and is it a trip hazard?
Half an inch high, with a 5 inch width to spread the transition across. It's a half saddle, meaning it is raised on one side only so the step up at the door sill is gradual rather than a square edge on both faces. At 1/2 inch it stays under the 1/2 inch vertical rise limit that accessibility work is normally held to.
3) Can I anchor this threshold straight into a concrete slab?
Yes. The 1675A is heavy gauge aluminum at .250 inch thick, and it takes direct drilling and screwing into concrete without buckling under load or working screws loose over time. That thickness is the reason it holds up where a lighter extruded threshold deforms around the fastener heads.
4) Is the Zero 1675A approved for a fire rated door opening?
It is fire rated and BHMA certified, and it carries ANSI J33100, J33160 and J33180. Those are the numbers to put on a submittal for a fire rated assembly in a hospital, school, or government building.
5) Is the Pemko 61 interlocking J hook a substitute for the Zero 1675A half saddle threshold?
No. The Zero 1675A is a complete half saddle threshold, 5 inches wide by 1/2 inch high in mill finish aluminum, that sits at the door sill and carries traffic across the opening. The Pemko 61 is an interlocking J hook threshold accessory in steel, 36 inches long, which is a companion piece that interlocks with a door bottom or hook strip rather than serving as the walking surface itself. If you need the threshold that spans the opening, the 1675A is the part; the Pemko 61 would be specified alongside a hook-type door bottom assembly, not in place of a saddle.
6) What is the difference between a half saddle threshold and a full saddle?
A full saddle is raised on both sides, so you step up onto it and back down. A half saddle like the 1675A is raised on one side only, which suits an opening where the two floor levels differ or where you want a flush run on the interior side and a lip at the door. It is the type to pick when you are easing a transition, not bridging two equal floors.
7) Will the 1675A work with an adjustable threshold system?
Yes, it is notched for it. The notch design lets the 1675A be used as part of an adjustable threshold assembly, which is useful when the slab is out of level or you need to fine tune the gap under a door bottom sweep after hanging.
8) I need an interlocking hook threshold, not a saddle. What else is there?
The 1675A is a half saddle, a flat-profile plate at the sill, and it does not interlock with a door bottom. If your detail calls for an interlocking assembly, the Pemko 61 Series interlocking J hook threshold accessory is the piece for that, in steel and 36 inches long. Interlocking hook and saddle are two different sealing approaches, so match whichever the door bottom on your opening is built for.
9) I need a threshold for a fire rated opening on a concrete sill - which of these two do I order?
Order the Zero 1675A. It is a fire rated, BHMA certified half saddle threshold built from heavy gauge aluminum that accepts direct drilling and screwing into concrete without buckling or loosening, and it complies with ANSI J33100, J33160 and J33180. The Pemko 61 is an interlocking J hook threshold accessory in steel and is a hook-interlock component rather than a saddle you anchor to the slab as the finished sill.
10) What is the difference in material between the Zero 1675A threshold and the Pemko 61?
The Zero 1675A is aluminum in a mill finish, a corrosion resistant profile at .250 inch thick suited to heavy commercial traffic and openings with large temperature differentials. The Pemko 61 is steel construction. Where a job specifies aluminum sill hardware for corrosion exposure or finish match with other aluminum door trim, the 1675A is the aluminum option of the two.
11) I need to cover a double door opening - does the Zero 1675A come longer than the 36 inch Pemko 61?
Yes. The Zero 1675A half saddle threshold is offered in 36 inch and 72 inch lengths, so a single 72 inch piece covers a pair of doors without a field splice. The Pemko 61 interlocking J hook threshold accessory is a 36 inch item.
12) What finish is the 1675A, and will it corrode at an exterior door?
Mill finish aluminum, left bare rather than anodized or painted. Aluminum is corrosion resistant, so it holds up at entrances seeing weather and heavy traffic, and Zero builds it to take extreme temperature differentials between inside and outside. Mill finish is the standard commercial look, so it blends with other aluminum door trim already on a building.
13) Is this a residential or a commercial threshold?
Commercial. The 1675A is specified for office buildings, schools, healthcare, retail, warehouses, multi-tenant residential and municipal buildings, which is where the heavy gauge section and BHMA certification matter. It will physically work on a house door, but you are paying for traffic-rated construction.
How fast can I get the Zero International 1675A 36 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 Zero International 1675A 36 come with a warranty?
Absolutely. The Zero International 1675A 36 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 Zero International 1675A 36?
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 Zero International 1675A 36 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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