NGP 428EDKB Aluminum Saddle Th...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$142.50
$140.70
NGP 428EDKB 1/2" Saddle Threshold, Dark Bronze Finish

NGP 428EDKB Aluminum Saddle Threshold 8" x 1/2" Dark Bronze Anodized Finish

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Model: 428EDKB-36

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

$142.50
$140.70
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NGP Aluminum Saddle Threshold 8" x 1/2" Dark Bronze Anodized Finish

Professional Door Threshold Solution

The NGP Aluminum Saddle Threshold delivers commercial-grade door transition performance with precision-engineered aluminum alloy 6063 construction in T5 temper. This 8" wide x 1/2" tall threshold features a fluted top surface for enhanced traction and durability, with typical wall thickness of .120" for structural integrity. The dark bronze anodized finish provides long-lasting protection and professional appearance for demanding commercial applications.

Professional Features & Benefits

  • Precision Dimensions: 8" wide x 1/2" tall profile designed for standard door applications with optimal transition height.
  • Heavy-Duty Construction: Aluminum alloy 6063 with T5 temper provides exceptional strength and corrosion resistance for long-term performance.
  • Enhanced Safety Design: Fluted top surface delivers improved traction and slip resistance in high-traffic areas.
  • Structural Integrity: Typical wall thickness of .120" ensures durability under heavy foot traffic and door operation loads.
  • Complete Installation Package: Includes #10 x 1-1/2" FH zinc plated wood screws for secure mounting to various substrates.
  • Professional Finish: Dark bronze/black anodized coating provides superior weather resistance and maintains appearance over time.
  • Lightweight Efficiency: 1.27 lbs./ft. weight allows for easy handling during installation while maintaining structural performance.

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 products deliver professional-grade reliability with aluminum alloy 6063 T5 temper construction rated for demanding commercial applications. The precision-engineered fluted top design and anodized finish ensure long-term performance and safety in high-traffic environments. Engineered for demanding commercial applications where dependable door 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 428EDKB-36 – Frequently Asked Questions

1) How tall does an 8 inch NGP saddle threshold sit above the floor, and will the door still clear it?
The 428EDKB profile is 8 inches wide by 1/2 inch tall. That 1/2 inch is the finished height the door bottom has to clear, so measure your existing undercut before ordering. If the door already sweeps close to the slab, you will either need to trim the door bottom or go to a lower profile saddle.
2) What screws come with the NGP 428EDKB threshold, and do they work on a concrete slab?
The 428EDKB ships with #10 x 1-1/2 inch flat head zinc plated wood screws. Those are for wood substrates. Setting it on a concrete slab means picking up masonry anchors or sleeve anchors separately, drilled to match the threshold's fastener holes.
3) I need a lower saddle threshold than 1/2 inch for a wheelchair accessible door. What else is there?
An 8 inch by 1/2 inch saddle is a full height transition. If you need a flatter profile, the Pemko 272 Series flat saddle threshold is 1/4 inch by 6 inches of heavy duty aluminum, which is half the rise and two inches narrower. Pemko lists the 272 as ADA compliant.
4) I need a threshold at a fire rated opening instead of the NGP 428EDKB - what do I use?
Look at the Cal-Royal saddle threshold series. The Cal-Royal CR2000 saddle threshold is described as fire rated and ADA compliant, and the Cal-Royal CR3700 saddle threshold carries a 3-hour positive pressure fire rating. If the opening on your drawing calls out a fire rating, those two are the saddle thresholds that state one; the NGP 428EDKB is an aluminum 6063 T5 saddle described for commercial door transition duty.
5) Is the dark bronze NGP threshold going to hold up in a high traffic commercial entry?
It is built for it. The extrusion is 6063 aluminum in T5 temper with a typical wall thickness of .120 inch, and the top face is fluted for traction underfoot. The dark bronze anodized finish is an integral anodic coating rather than a paint, so it wears rather than peels. NGP rates the 428EDKB as commercial.
6) Will a dark bronze anodized threshold match my existing bronze door hardware and storefront?
The 428EDKB is finished in dark bronze/black anodized aluminum, which is the standard match for dark bronze anodized storefront framing and bronze finish exit hardware. Anodizing is done to the aluminum itself, so the tone stays consistent piece to piece across a building rather than drifting the way a painted finish does.
7) What is the difference between a saddle threshold and a flat plate at the door, and when do I need the saddle?
A saddle threshold like the 428EDKB has a raised crown with sloped shoulders, 1/2 inch at its high point across an 8 inch width, so it bridges a floor level change and gives the door bottom sweep something to seal against. A flat plate just covers the joint between two floor finishes and seals nothing. Pick the saddle at exterior and rated openings where you need the door bottom to close down onto a surface. The wide 8 inch face also lets you span a wider gap between a slab and an interior finish floor.
8) Can I use a Cal-Royal CR3700 in place of an NGP 428EDKB without changing anything at the door?
Treat it as a different part, not a drop-in. The CR3700 is a Cal-Royal saddle threshold series carrying a 3-hour positive pressure fire rating, and its profile is its own; the NGP 428EDKB is a specific 8 inch wide by 1/2 inch tall fluted aluminum saddle in 6063 T5 with a .120 inch typical wall. Swapping between the two changes the width the saddle covers at the sill and the height the door bottom has to clear, so verify the sill width, the undercut at the door, and the fastener pattern before you order the replacement.
9) I need an 84 inch run of threshold - do the comparable saddles cover that length?
The NGP 428EDKB aluminum saddle threshold is offered in a 36 inch length and an 84 inch length, so a single 84 inch piece covers a wide opening or a pair of doors without a field splice. The Cal-Royal CR2000, the Cal-Royal CR3700, and the Pemko 272 are each sold as their own saddle threshold series; confirm the cut length you need on whichever series you choose, and if you are matching across a run of openings, keeping one series across all of them keeps the profile and the surface consistent.
10) Is a Pemko 272 an acceptable substitute when the spec calls for the NGP 428 series in dark bronze?
Not on appearance. The NGP 428EDKB carries a dark bronze anodized finish, described as dark bronze/black anodized, which is a specified aesthetic on an entrance where the door hardware and frame are bronze. The Pemko 272 is described as a heavy-duty aluminum flat saddle threshold. It also differs dimensionally: 1/4 inch by 6 inch against 8 inch by 1/2 inch on the 428EDKB. If the drawing is calling out the bronze finish and the 8 inch width, the 272 is a different item, not a finish variant of the same one.
11) What is the simplest saddle threshold to specify if I do not need a fire rating?
If the opening does not carry a fire rating requirement, the NGP 428EDKB is a straightforward commercial aluminum saddle: 6063 alloy in T5 temper, 8 inch by 1/2 inch, fluted top, dark bronze anodized, supplied with #10 x 1-1/2 inch flat head zinc plated wood screws. The Cal-Royal CR2000 and CR3700 saddle threshold series are the ones described with fire ratings, so those are what you move to when the opening does carry one.
How fast can I get the NGP 428EDKB-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 428EDKB-36 come with a warranty?
Absolutely. The NGP 428EDKB-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 428EDKB-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 428EDKB-36 from ZenSupply?
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