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NGP 428E Saddle Threshold Mill Aluminum 1/2" x 8" with Fluted Top
Model: NGP-428E
NGP 428E Saddle Threshold Mill Aluminum 1/2" x 8" with Fluted TopProfessional Door Threshold SolutionThe NGP 428E Saddle Threshold delivers commercial-grade door sealing performance with...
NGP
Starting at
$105.75
$83.01
NGP 426 Saddle Threshold 6" x 1/2" Mill Aluminum with Fluted Top
Professional Door Threshold Solution
The NGP 426 Saddle Threshold delivers professional-grade door transition performance with precision-extruded aluminum alloy 6063 construction in T5 temper. Measuring 6" wide x 1/2" tall with a fluted top surface for enhanced traction, this threshold features typical wall thickness of .175" and weighs 1.00 lbs./ft. for reliable installation. Mill aluminum finish provides durability for commercial applications with optional SIA slip-resistant finish available for enhanced safety in hazardous conditions.
Professional Features & Benefits
- Precision Dimensions: 6" 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 durability and corrosion resistance for long-term performance.
- Fluted Top Design: Textured surface enhances traction and slip resistance for improved safety in foot traffic areas.
- Professional Wall Thickness: Typical .175" wall thickness ensures structural integrity while maintaining lightweight 1.00 lbs./ft. specification.
- Complete Installation Hardware: Includes #10 x 1-1/2" FH zinc plated wood screws for secure mounting to door frames.
- Versatile Finish Options: Standard mill aluminum finish with optional SIA slip-resistant coating available for hazardous condition applications.
- Commercial-Grade Performance: Engineered for demanding commercial applications where reliable door transition performance is essential.
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 construction and T5 temper rating for demanding commercial applications. The precision .175" wall thickness and fluted top design provide both structural integrity and enhanced safety performance. 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 426-50 – Frequently Asked Questions
1) How tall is the NGP 426 threshold, and will it clear the bottom of my door?
Half an inch of rise, across a 6 inch wide profile. That half inch is what your door bottom has to clear, so undercut the leaf or check your existing gap before you set it. It is a saddle profile, meaning it ramps up on both sides rather than sitting flat, which is what you want at an exterior or transition opening where you're trying to stop water and air at the sill.
2) Do I need to buy screws and anchors separately for the NGP 426 threshold?
Fasteners come with it: #10 x 1-1/2 inch flat head zinc plated wood screws. Those are sized for wood substrate. If you're setting the threshold on concrete, which is the usual case at an exterior sill, you'll need to supply your own masonry anchors or sleeve anchors and drill for them. Sealant under the threshold is also on you.
3) I need an ADA compliant threshold, is the NGP 426 the right one?
For a barrier-free opening, look at the Pemko 272 Series flat saddle threshold instead. It is a 1/4 inch x 6 inch heavy-duty aluminum threshold specifically listed as ADA compliant, and the lower profile is what makes that possible. The 426 is a 1/2 inch tall saddle, a taller crown built for sealing rather than for a flush accessible route.
4) What threshold should I use on a fire rated door opening?
Cal-Royal carries fire rated saddle thresholds that are the direct swap here: the CR2000 Series is fire rated, and the CR3700 Series carries a 3-hour positive pressure fire rating. Those are the ones to specify when the opening is a rated assembly and the inspector will be looking at the sill. The NGP 426 is a mill aluminum commercial saddle for general transitions.
5) Is the top of the NGP 426 threshold slippery when wet?
The top face is fluted, so the ribs break up the surface and give shoe soles something to bite. For wet or greasy areas where that isn't enough, NGP offers an SIA slip-resistant finish on this threshold as an option instead of the standard mill aluminum. Kitchens, pool decks, and washdown areas are where that upgrade earns its keep.
6) What is the difference between a saddle threshold and a flat threshold?
A saddle threshold like the NGP 426 has a raised crown, half an inch high here, with a slope down each side. That crown is a barrier: it works with a door bottom sweep or automatic door bottom to seal against water, air and light at an exterior opening. A flat threshold is a plate with no rise, used where you only need to bridge a floor-covering change or hide the joint between two finishes. If the opening is exterior, or you need to seal it, the saddle profile is the one you want.
7) Can I paint or finish the NGP 426 threshold to match my other openings?
It ships in mill aluminum, which is the raw uncoated extrusion, so it reads as bright silver rather than a matched architectural finish. If you're standardizing a building where every sill needs to look the same, mill is the consistent baseline across the run, and the only other factory option on the 426 is the SIA slip-resistant treatment.
8) Is the NGP 426 threshold rated for commercial use or is it a residential product?
Commercial. NGP builds the 426 for office buildings, schools, hospitals, retail, warehouses, multi-tenant residential and municipal buildings, and the .175 inch wall on the extrusion is what carries that duty. It works fine on a residential opening too, but you're buying commercial-weight material for it.
How fast can I get the NGP 426-50 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 426-50 come with a warranty?
Absolutely. The NGP 426-50 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 426-50?
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 426-50 from ZenSupply?
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and
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every order.
Our team is always ready to help you choose the right product for your project.