NGP 457 Half Saddle Threshold ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$94.80
NGP 457 3/4" Half Saddle and Extended Width Component

NGP 457 Half Saddle Threshold Component 3/4" x 5" Aluminum Alloy Construction

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Model: 457-36

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

$94.80
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NGP 457 Half Saddle Threshold Component 3/4" x 5" Aluminum Alloy Construction

Professional Door Threshold Solution

The NGP 457 Half Saddle Threshold Component delivers commercial-grade door transition performance with precision-engineered aluminum alloy 6063, T5 temper construction. Measuring 5" wide x 3/4" tall with fluted top design and .125" typical wall thickness, this threshold component provides durable door sealing and transition functionality. Available in mill finish and dark bronze finish options with slip-resistant SIA finish available for enhanced safety applications.

Professional Features & Benefits

  • Precision Dimensions: 5" wide x 3/4" tall profile designed for optimal door clearance and weather sealing performance.
  • Heavy-Duty Construction: Aluminum alloy 6063, T5 temper provides exceptional durability and corrosion resistance for commercial applications.
  • Fluted Top Design: Engineered surface texture enhances grip and reduces slip hazards in high-traffic areas.
  • Lightweight Efficiency: .79 lbs./ft. weight rating allows easy handling while maintaining structural integrity.
  • Complete Hardware Package: Includes #10 x 1-1/2" FH zinc plated wood screws for secure installation.
  • Finish Options: Available in mill finish and dark bronze finish with optional slip-resistant SIA finish for enhanced safety.
  • Extended Width Component: Half saddle design accommodates various door configurations and installation requirements.

Technical Specifications

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

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 NGP Quality?

NGP threshold components deliver professional-grade reliability with aluminum alloy 6063, T5 temper construction rated at .79 lbs./ft. for optimal strength-to-weight performance. The precision-engineered 5" x 3/4" profile with .125" wall thickness ensures long-lasting durability in demanding commercial applications where dependable door sealing and transition performance is essential.

Manufacturer Resources

NGP Threshold Catalog

Product Specs

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

NGP 457-36 – Frequently Asked Questions

1) Will the NGP 457 half saddle threshold fit a standard 36 inch door opening?
Yes. The 457 comes in a 36 inch length, which covers a standard single 3-0 opening frame to frame. Longer runs are covered by the 71 inch and 72 inch lengths, which suit a pair of doors or a wider frame. There is no shorter option, so for anything under 36 inches you cut the extrusion down on site.
2) How tall does the NGP 457 threshold sit above the floor, and will the door clear it?
The 457 profile is 3/4 inch tall and 5 inches wide. That 3/4 inch is the rise the door bottom has to clear, so undercut or door sweep has to be set for it. If the door is already hung with a tight bottom clearance, a low profile flat saddle is the better call: the Pemko 272 Series is a 1/4 inch x 6 inch flat saddle that sits far closer to the floor.
3) Do I need to buy screws and anchors separately for the NGP 457 saddle threshold?
Screws come with it: #10 x 1-1/2 inch flat head zinc plated wood screws. Those are sized for a wood substrate. On a concrete slab, which is the usual commercial entrance condition, you supply your own anchors and shields to suit the floor.
4) What is the closest saddle threshold to the NGP 457 if the opening needs a documented fire rating?
The NGP 457 is a half saddle threshold in aluminum alloy 6063, T5 temper, 5 inches wide by 3/4 inch tall with a fluted top and .125 inch typical wall thickness. When the opening needs a saddle threshold carrying a stated fire rating, the Cal-Royal CR3700 saddle threshold is the peer to move to - it is described with a 3-hour positive pressure fire rating. The Cal-Royal CR2000 saddle threshold is also described as fire rated and ADA compliant. Both are saddle thresholds like the 457, so the profile family is the same; the difference is the rating documentation you can put on a fire-rated opening.
5) Is the Pemko 272 a drop-in replacement for an NGP 457 half saddle threshold?
No - the two are different threshold profiles even though both are saddles. The NGP 457 is a half saddle 5 inches wide and 3/4 inch tall with a fluted top surface, supplied in 36 inch, 71 inch and 72 inch lengths. The Pemko 272 is a flat saddle threshold at 1/4 inch by 6 inches. Pulling a 457 and setting a 272 in the same opening changes both the height of the transition at the door bottom and the width of the plate on the sill, which affects door bottom clearance and sweep contact. Treat it as a profile change to verify against the door, not a like-for-like swap.
6) Is a half saddle threshold like the NGP 457 the right choice, or do I need a full saddle?
A half saddle is a one sided transition: it carries the floor change and the door stop line on a single 5 inch wide, 3/4 inch tall bearing surface rather than ramping both sides equally. It suits an opening where the flooring meets on one side and you want a defined edge under the door. Where you need a symmetric ramp both directions, a flat saddle such as the Pemko 272 Series at 1/4 inch x 6 inch is the flatter, wider transition.
7) Can I cut an NGP 457 aluminum threshold to length on site?
Yes. It's a 6063-T5 aluminum extrusion with a .125 inch typical wall, so it cuts clean with a carbide blade on a miter saw. Buy the 36, 71 or 72 inch length that is closest above your measured opening and trim down. Deburr the cut end and reseal the substrate before you set it.
8) I'm standardizing thresholds across a building. Will the NGP 457 match openings of different widths?
The profile is constant, 5 inches wide by 3/4 inch tall in 6063-T5 aluminum, across all three lengths, so the sightline and the rise are identical door to door no matter which length you order. Pick mill or dark bronze once and hold it across the building, then order 36 inch for single doors and 71 or 72 inch for wider frames and pairs.
9) What is the difference between the Cal-Royal CR2000 and CR3700 saddle thresholds when replacing an NGP 457?
Both are Cal-Royal saddle threshold series and both are alternatives to the NGP 457 half saddle. The CR2000 is described as fire rated and ADA compliant, so it is the one to look at when the opening has to satisfy both the rated door and an accessible transition. The CR3700 is described with a 3-hour positive pressure fire rating, which is the specific rating figure to cite when the drawing calls out positive pressure. The NGP 457 itself is a 5 inch by 3/4 inch fluted-top half saddle in 6063-T5 aluminum, so either Cal-Royal substitution should be checked against the existing sill width and door bottom clearance.
10) Which saddle threshold should be specified when standardizing thresholds across a facility with both rated and unrated openings?
Split the specification by opening. The NGP 457 half saddle covers the general commercial transitions - aluminum alloy 6063, T5 temper, 5 inches by 3/4 inch, fluted top for grip in traffic, mill or dark bronze finish with slip-resistant SIA available, and it ships with #10 x 1-1/2 inch flat head zinc plated wood screws. For the rated openings in the same facility, the Cal-Royal CR3700 saddle threshold carries a 3-hour positive pressure fire rating and the Cal-Royal CR2000 is described as fire rated and ADA compliant. Keeping one saddle family per opening class keeps the transition height consistent underfoot while satisfying the rated doors.
11) For a high-traffic entrance where slip resistance matters, does the NGP 457 or a flat saddle threshold suit better?
The NGP 457 half saddle has a fluted top surface engineered to add grip and reduce slip hazard in high-traffic areas, and a slip-resistant SIA finish is available on top of the standard mill and dark bronze finishes. That texture is the reason to keep the 457 on a busy commercial entrance. The Pemko 272 is a flat saddle threshold at 1/4 inch by 6 inches, a lower and wider plate, which is the direction to go when the entrance instead has to minimize the rise for rolling and wheeled traffic. The choice comes down to which the opening is being judged on - surface texture at 3/4 inch, or a 1/4 inch transition height.
12) What finishes does the NGP 457 half saddle threshold come in?
Mill finish and dark bronze. Mill is the raw aluminum look that disappears into most commercial openings; dark bronze matches dark anodized frames and storefront. A slip resistant SIA finish is also offered where the walking surface matters, on top of the fluted top the extrusion already has.
13) Is the NGP 457 threshold suitable for a high traffic commercial entrance, or is it a residential part?
It's a commercial grade part, used in office buildings, schools, healthcare, retail, warehouses, multi tenant residential and municipal buildings. The fluted top gives traction underfoot, and the SIA slip resistant finish is the option to add where the entrance sees weather or heavy foot traffic.
How fast can I get the NGP 457-36 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 NGP 457-36 come with a warranty?
Absolutely. The NGP 457-36 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 NGP 457-36?
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 NGP 457-36 from ZenSupply?
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