NGP 653 Offset Threshold 1/2" ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$66.00
$51.62
NGP 653 Offset Threshold 1/2" x 5-1/2" Aluminum Alloy Door Saddle

NGP 653 Offset Threshold 1/2" x 5-1/2" Aluminum Alloy Door Saddle

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Model: 653-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$66.00
$51.62
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NGP 653 Offset Threshold 1/2" x 5-1/2" Aluminum Alloy Door Saddle

Professional Offset Threshold Solution

The NGP 653 Offset Threshold delivers professional-grade door transition performance with precision-engineered aluminum alloy 6063, T5 temper construction. Measuring 1/2" tall by 5-1/2" wide, this offset threshold features a fluted top surface for enhanced traction and typical wall thickness of .125" for durability. At .78 lbs./ft., this lightweight yet robust threshold provides reliable performance for commercial door applications with mill finish standard.

Professional Features & Benefits

  • Precision Dimensions: 1/2" tall x 5-1/2" wide profile designed for optimal door clearance and weather sealing performance.
  • Heavy-Duty Construction: Aluminum alloy 6063, T5 temper provides exceptional strength-to-weight ratio at .78 lbs./ft. for long-term durability.
  • Enhanced Safety Design: Fluted top surface provides improved traction and slip resistance for pedestrian safety.
  • Professional Wall Thickness: Typical .125" wall thickness ensures structural integrity under heavy traffic conditions.
  • Complete Installation Package: Includes #10 x 1-1/2" FH zinc plated wood screws for secure mounting (DKB screws supplied with dark bronze thresholds).
  • Optional Slip-Resistant Finish: SIA slip-resistant finish available for hazardous conditions where safety is a priority.
  • Versatile Finish Options: Standard mill finish with optional specialized coatings for enhanced performance in demanding environments.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Hang Type: Offset Hung
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Thresholds
  • Product Type: Thresholds - Saddle
  • Series: Offset 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 engineered for demanding commercial applications. The precision .125" wall thickness and fluted top design ensure dependable performance where structural integrity and pedestrian safety are essential.

Manufacturer Resources

NGP Threshold Catalog

Product Specs

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

NGP 653-36 – Frequently Asked Questions

1) Will the NGP 653 threshold work with an offset hung door?
That's exactly what the 653 is for. It's an offset saddle threshold, meaning the raised leg sits under the door and the wider flat leg runs out to the interior side, so the door closes against the offset rather than sitting on a flat plate. If your door hangs in line with the frame face and closes onto a flat surface, a flat saddle like the Pemko 272 Series is the right shape instead.
2) What lengths does the NGP 653 offset threshold come in?
Four cut lengths: 36, 48, 72 and 84 inches, each available in mill aluminum or dark bronze. A 36 inch piece covers a standard single opening; the 72 and 84 inch lengths are there for pairs of doors and wide openings so you can run one continuous saddle instead of butting two pieces together at the meeting stile. Aluminum cuts down cleanly with a miter saw if you need an in-between size.
3) Are screws included with the NGP 653 threshold or do I need to buy fasteners?
Fasteners come in the box. Each 653 ships with #10 x 1-1/2 inch flat head zinc plated wood screws, and dark bronze thresholds ship with DKB screws so the heads match the finish rather than showing bright zinc across the saddle. Note those are wood screws: setting the saddle into concrete or masonry means supplying your own anchors.
4) What is the difference between the NGP 653 offset threshold and the Pemko 272 flat saddle threshold?
The NGP 653 is an offset threshold, 1/2 inch tall by 5-1/2 inches wide in 6063-T5 aluminum alloy with a fluted top, and it is made for offset hung openings where the door sits off the centerline of the saddle. The Pemko 272 is a flat saddle threshold in heavy-duty aluminum at 1/4 inch by 6 inches, so it presents a level top face rather than an offset profile, sits half the height of the 653, and covers a half inch more floor width. If the door is offset hung, the 653 profile is the one that matches the opening; if the frame takes a flat saddle, the 272 geometry is the fit.
5) Which threshold should I use on a fire rated door opening instead of the NGP 653?
For a fire rated opening, look at the Cal-Royal saddle threshold series. The CR2000 is a saddle threshold series with a fire rated and ADA compliant design, and the CR3700 carries a 3-hour positive pressure fire rating. The NGP 653 is an offset threshold in 6063-T5 aluminum with a fluted top for commercial openings, sold 36, 48, 72 and 84 inch lengths in mill aluminum and dark bronze. When the door schedule calls out a fire rating at the sill, specify from the Cal-Royal series that carries the rating you need.
6) Is the NGP 653 threshold slippery when wet?
The standard 653 has a fluted top, meaning ribs run the length of the saddle to break up the walking surface and give some grip. For entrances that get wet or greasy, NGP offers an SIA slip-resistant finish on this threshold, which is an applied abrasive surface rather than just the extruded flutes. Specify SIA when you order if the opening is an exterior door, a kitchen, or anywhere a bare aluminum top would be a problem.
7) Which finish should I order to match dark bronze doors and frames?
Dark bronze is one of the two 653 finishes, offered in all four lengths, and it ships with DKB screws so the fasteners disappear into the saddle instead of dotting it with silver heads. The other option is mill aluminum, which is the bare unpainted extrusion, standard on aluminum storefront and hollow metal openings.
8) Can I substitute a Cal-Royal CR2000 or CR3700 saddle threshold for the NGP 653?
Treat them as different profiles rather than a drop-in swap. The NGP 653 is an offset threshold built for offset hung doors, 1/2 inch tall by 5-1/2 inches wide with a fluted top and .125 inch typical wall thickness, supplied with #10 x 1-1/2 inch flat head zinc plated wood screws. The Cal-Royal CR2000 and CR3700 are saddle threshold series, the CR2000 with a fire rated and ADA compliant design and the CR3700 with a 3-hour positive pressure fire rating. Match the sill profile the frame was prepped for first, then the rating the opening calls for.
9) Can I cut an NGP 653 threshold down to fit a narrower opening?
Yes. It's a 6063-T5 aluminum extrusion with a constant profile along its length, so cutting a 36 inch piece down to an odd opening width is normal practice on site. Cut with a carbide blade and deburr the ends. Order the next length up from your rough opening and trim, rather than butting two short pieces at a joint where water will find it.
How fast can I get the NGP 653-36 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 653-36 come with a warranty?
Absolutely. The NGP 653-36 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 653-36?
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 653-36 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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