NGP 424EDKB Saddle Threshold 4...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$78.88
NGP 424EDKB 1/2" Saddle Threshold, Dark Bronze Finish

NGP 424EDKB Saddle Threshold 4" x 1/2" Dark Bronze Anodized Aluminum

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Model: 424EDKB 42

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

$78.88
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NGP 424EDKB Saddle Threshold 4" x 1/2" Dark Bronze Anodized Aluminum

Professional Door Threshold Solution

The NGP 424EDKB Saddle Threshold provides a durable transition solution with precision-engineered aluminum construction. This 4" wide x 1/2" tall threshold features aluminum alloy 6063 with T5 temper for commercial-grade strength and a fluted top design for enhanced traction. The dark bronze anodized finish delivers long-lasting appearance and corrosion resistance with typical wall thickness of .120" for structural integrity.

Professional Features & Benefits

  • Precision Dimensions: 4" wide x 1/2" tall profile designed for standard door applications with optimal height transition.
  • Heavy-Duty Construction: Aluminum alloy 6063 with T5 temper provides exceptional durability and structural strength for high-traffic commercial applications.
  • Enhanced Safety Design: Fluted top surface provides improved traction and slip resistance for safe pedestrian traffic.
  • Robust Wall Thickness: Typical .120" wall thickness ensures structural integrity and long-term performance under load.
  • Complete Installation Package: Includes #10 x 1-1/2" FH zinc plated wood screws for secure mounting to various substrates.
  • Lightweight Efficiency: At .65 lbs./ft., the threshold provides strength without excessive weight for easier handling and installation.
  • Corrosion-Resistant Finish: Dark bronze/black anodized aluminum finish provides superior weather resistance and maintains appearance over time.

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 and precision .120" wall thickness for demanding commercial applications. The fluted top design and anodized finish provide both safety and durability benefits. Engineered for demanding commercial applications where dependable performance and long-term appearance retention are 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 424EDKB 42 – Frequently Asked Questions

1) How tall is the 424EDKB threshold and how much rise does it put in the doorway?
The profile is 4 inches wide by 1/2 inch tall, so it raises the walking surface a half inch above the floor. That half inch also sets your door undercut: the bottom of the door has to clear the top of the saddle, so allow for it before you hang or rehang the leaf.
2) Do I need to buy fasteners for the NGP 424EDKB, or are screws included?
Screws come with it. The 424EDKB ships with #10 x 1-1/2 inch flat head zinc plated wood screws. Those are sized for wood substrate; if you are anchoring into concrete or tile you will need to supply your own anchors and countersink the holes to keep the heads flush with the fluted top.
3) Should I use a 1/2 inch saddle threshold or a flat 1/4 inch one for an accessible opening?
A 1/2 inch saddle like the 424EDKB creates a half inch rise across the opening, which typically needs beveling consideration on an accessible route. If your job is calling for a low-profile transition, the Pemko 272 Series is a flat saddle at 1/4 inch by 6 inches wide and is described as ADA compliant, which makes it the one to look at for a barrier-free entry. Use the 4 inch by 1/2 inch NGP profile where you need the extra height to cover a floor-level change or a worn slab.
4) If the door opening is fire rated, is the NGP 424EDKB the right saddle or should I look at something else?
The NGP 424EDKB is described as a commercial-grade aluminum saddle with a fluted top for traction; it is specified on appearance and durability rather than on a fire rating. When the opening has to carry a rated assembly, the Cal-Royal CR2000 Series saddle threshold is described as fire rated and ADA compliant, and the Cal-Royal CR3700 Series carries a 3-hour positive pressure fire rating. For a 3-hour positive pressure opening the CR3700 is the one to specify.
5) Is a 4 inch wide threshold wide enough to sit under the door and reach the stop?
Four inches of width gives you roughly enough bearing to span under a 1-3/4 inch commercial door leaf and still land on floor either side of the door stop. If your frame is deep, or you are covering a wider gap between two flooring types, the 6 inch wide Pemko 272 saddle gives more coverage. Measure from the outside face of the frame to where the finished floor picks up before you commit to the 4 inch profile.
6) Can the Pemko 272 be used as a direct drop-in replacement for an NGP 424EDKB?
Not without checking the opening. The NGP 424EDKB sits 1/2 inch high on a 4 inch wide fluted body in dark bronze anodized aluminum, and ships with #10 x 1-1/2 inch flat head zinc plated wood screws. The Pemko 272 Series is a flat saddle at 1/4 inch by 6 inch. Swapping to the 272 means a different fastener hole pattern, two more inches of floor coverage, and a 1/4 inch lower meeting point for the door bottom, so the undercut and any sweep need to be re-checked before you order it as a replacement.
7) I need a bronze-toned saddle threshold to match existing dark hardware - do the comparable saddles cover that?
The NGP 424EDKB is the one specified by finish in this group: dark bronze/black anodized aluminum, which is what you want when the saddle has to read with dark bronze door hardware across a fleet of openings. It comes in 42 inch, 72 inch and 80 inch lengths. The Cal-Royal CR2000, Cal-Royal CR3700 and Pemko 272 Series saddles are identified by their series and performance description rather than by a bronze finish, so the 424EDKB is the match for appearance-driven jobs.
8) Will the dark bronze finish on this threshold hold up outdoors?
The dark bronze/black anodized finish on the 424EDKB is an anodic coating on the aluminum, which resists corrosion and holds its color rather than flaking the way a painted finish does. It pairs with dark bronze door hardware and storefront framing. Anodized aluminum is not a mill finish, so avoid abrasive cleaners that cut through the coating.
9) Can I standardize this threshold across every exterior door in my building?
Yes, within the sizes offered. The 424EDKB comes in 42, 72 and 80 inch lengths in one finish, dark bronze anodized, so single leaves and pairs across a property all get the same 4 inch by 1/2 inch profile and the same color. Buying one part number for the whole fleet also means one screw type on the truck: #10 x 1-1/2 inch flat heads ship with each piece.
How fast can I get the NGP 424EDKB 42 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 424EDKB 42 come with a warranty?
Absolutely. The NGP 424EDKB 42 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 424EDKB 42?
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 424EDKB 42 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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