NGP 657 Aluminum Threshold Ram...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$83.77
NGP 657 Ramp, 1/2 x 4 x 36 Inch, Aluminum

NGP 657 Aluminum Threshold Ramp 1/2 x 4 x 36 Inch with Fluted Top

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Model: 657-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$83.77
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NGP 657 Aluminum Threshold Ramp 1/2 x 4 x 36 Inch with Fluted Top

Professional Aluminum Threshold Solution

The NGP 657 Aluminum Threshold Ramp provides a durable transition solution with precise 1/2 x 4 x 36 inch dimensions. Constructed from aluminum alloy 6063 with T5 temper for enhanced strength, this threshold features a fluted top surface for improved traction and safety. The lightweight design at .86 lbs./ft. combines durability with easy handling for professional installations.

Professional Features & Benefits

  • Precise Dimensions: 1/2 x 4 x 36 inch profile designed for standard door applications with consistent fit and performance.
  • Premium Aluminum Construction: Aluminum alloy 6063 with T5 temper provides exceptional durability and corrosion resistance for long-term performance.
  • Safety-Enhanced Surface: Fluted top design improves traction and reduces slip hazards in high-traffic areas.
  • Lightweight Design: At .86 lbs./ft., the threshold offers easy handling and installation while maintaining structural integrity.
  • Professional Wall Thickness: Typical .125 inch wall thickness ensures structural stability and professional-grade performance.
  • Complete Installation Package: Includes #10 FH zinc plated wood screws for secure mounting and immediate installation.
  • Mill Finish: Clean mill finish provides a professional appearance suitable for various architectural applications.

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 construction and T5 temper treatment for demanding commercial applications. The precision-engineered design with fluted safety surface and included mounting hardware ensures dependable performance where professional door hardware solutions are essential.

Manufacturer Resources

NGP Threshold Catalog

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Ramps
Subcategory:
Thresholds
Commercial/Residential:
Commercial
Hang Type:
Offset Hung
Product Category:
Door Trim and Accessories
Department:
Door Hardware
Product Substrate:
Aluminum

NGP 657-36 – Frequently Asked Questions

1) Will the NGP 657 threshold ramp work with an offset hung door?
Offset hung is exactly what the 657 is built for. It's a saddle-style aluminum ramp with a 1/2 x 4 x 36 inch profile, so it sits at the opening and ramps the change in floor level rather than sealing under a centered door. If your door swings on center hung or pivot hardware and you need a two-piece or interlocking threshold, the 657 is the wrong profile.
2) What lengths and finishes does the NGP 657 aluminum ramp come in?
Two lengths, 36 inch and 48 inch, and both are stocked in mill aluminum and dark bronze. For a 36 inch door leaf the 36 inch piece runs the opening; for a 42 or 48 inch leaf, or a pair, take the 48 inch and cut it to the frame. Aluminum cuts clean with a carbide blade, though a cut end leaves bare metal on a bronze piece.
3) Do I need to buy screws and anchors separately for the NGP 657 threshold ramp?
Screws come with it. Each piece ships with #10 flat head zinc plated wood screws for mounting. Those are wood screws, so on a concrete or terrazzo floor you'll want your own masonry anchors and machine screws instead; NGP supplies the wood-screw pack only.
4) Is the NGP 657 ramp strong enough for a commercial entrance with carts and heavy traffic?
It's rated commercial and built from 6063-T5 aluminum with a typical .125 inch wall, which is the standard extrusion wall for a walked-on threshold. The fluted top gives traction underfoot. 6063 also resists corrosion, so it holds up at an exterior door or a wash-down area better than a mill steel plate would.
5) Should I use a ramp threshold like the NGP 657 or a standard saddle threshold?
Pick the ramp when there's a level change to take out, a slab that finished high, a floor covering that steps up, or an existing threshold edge someone keeps catching a toe on. A flat saddle just caps the joint between two floors at the same height. The 657 sheds 1/2 inch of rise over a 4 inch run and the fluted surface keeps the slope from getting slick.
6) Will dark bronze NGP 657 ramps match the mill aluminum ones I already have in the building?
No, they won't. Mill aluminum is the raw silver extrusion finish; dark bronze is a separate anodized-look finish. If you're standardizing openings across a property, order every 657 in one finish, both lengths are available in each. Mixing them in the same corridor shows.
How fast can I get the NGP 657-36 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 657-36 come with a warranty?
Absolutely. The NGP 657-36 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 657-36?
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 657-36 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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