NGP 513HD Heavy Duty Aluminum ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$179.23
NGP 513HD Heavy Duty Aluminum Threshold 5" x 1/4" with Fluted Top

NGP 513HD Heavy Duty Aluminum Threshold 5" x 1/4" with Fluted Top

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Model: 513HD-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$179.23
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NGP 513HD Heavy Duty Aluminum Threshold 5" x 1/4" with Fluted Top

Professional Heavy-Duty Threshold Solution for High-Traffic Applications

The NGP 513HD Heavy Duty Threshold delivers exceptional durability for demanding commercial applications with its aluminum alloy 6063, T5 temper construction. Measuring 5" wide x 1/4" tall with a fluted top design, this threshold is specifically engineered for delivery and storage doorways where heavier loads travel, including forklift and vehicular traffic areas. At 1.4 lbs./ft., it provides robust performance while maintaining manageable installation weight.

Professional Features & Benefits

  • Heavy-Duty Dimensions: 5" wide x 1/4" tall profile designed specifically for high-load applications and vehicular traffic.
  • Premium Aluminum Construction: Aluminum alloy 6063, T5 temper provides exceptional strength and corrosion resistance for long-term durability.
  • Fluted Top Design: Textured surface enhances traction and safety while providing visual appeal in commercial settings.
  • Forklift and Vehicle Ready: Engineered to withstand forklift and vehicular traffic in delivery and storage doorway applications.
  • Lightweight Installation: At 1.4 lbs./ft., provides easy handling during installation while maintaining structural integrity.
  • Complete Hardware Included: #10 x 1-1/2" FH zinc plated wood screws included for secure mounting.
  • Multiple Finish Options: Available in mill finish and dark bronze, with optional SIA slip-resistant finish for enhanced safety.

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

  • Delivery and Storage Doorways
  • Warehouse and Distribution Centers
  • Industrial Facility Loading Areas
  • Commercial Building Service Entrances
  • Manufacturing Plant Access Points
  • Retail Back-of-House Operations
  • Multi-Tenant Commercial Properties

Why Choose NGP Quality?

NGP 513HD thresholds deliver professional-grade reliability with aluminum alloy 6063, T5 temper construction rated for forklift and vehicular traffic applications. The fluted top design and multiple finish options provide both functional performance and aesthetic appeal. Engineered for demanding commercial applications where dependable performance under heavy loads 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 513HD-36 – Frequently Asked Questions

1) What lengths does the NGP 513HD threshold come in, and will one cover a double door opening?
Three lengths are offered: 36 inch, 72 inch, and 84 inch. A 36 inch piece covers a single 3-0 door. For a pair of 3-0 doors, the 72 inch length runs the full opening in one piece, and the 84 inch covers a wider pair or an opening with frame throat to pick up. Both mill aluminum and dark bronze are stocked in all three lengths. Aluminum threshold can be cut down on site, so order the next length up rather than piecing two together across a traffic opening.
2) Is a 1/4 inch high threshold low enough to roll carts and hand trucks over?
At 1/4 inch tall the 513HD is a flat saddle, not a ramped or bumper profile, so carts, hand trucks and forklift wheels roll straight across it. The top is fluted rather than smooth, which gives traction underfoot in a doorway that sees both wheels and boots. If your opening needs a raised stop to seal against a door bottom sweep or a weatherstrip, this is the wrong profile, you want a bumper or interlocking threshold instead.
3) Do NGP 513HD thresholds come with mounting screws, or do I need to buy fasteners separately?
Fasteners are included. Each 513HD ships with #10 x 1-1/2 inch flat head zinc plated wood screws for securing the threshold down. Those are wood screws, so they suit a wood subfloor or a wood buck directly. Setting into concrete, which is the usual case at a dock or service entrance, means supplying your own anchors and drilling the slab, the supplied screws will not hold in masonry.
4) I need a saddle threshold for a fire rated door opening - is the NGP 513HD the right part?
The NGP 513HD is built for delivery and storage doorways carrying forklift and vehicular traffic, with a fluted top and 6063 T5 aluminum construction. When the opening is a fire rated door, look instead at the Cal-Royal CR2000 saddle threshold, which is a fire rated and ADA compliant design, or the Cal-Royal CR3700, which carries a 3-hour positive pressure fire rating. For a 3-hour labeled assembly with a positive pressure requirement, the CR3700 is the one to specify.
5) What is the difference between the NGP 513HD threshold and the Pemko 272?
Both are flat saddle thresholds in 1/4 inch heavy-duty aluminum, so they serve the same low-profile opening. The width is where they part: the NGP 513HD is 5 inches wide, while the Pemko 272 is a 6 inch wide profile. If the existing threshold prep or the sill cut on the opening is 6 inches, the 272 drops into it without rework; if you are working to a 5 inch footprint, the 513HD is the match. The Pemko 272 is described as ADA compliant, and the 513HD carries a fluted top for traction and is rated for forklift and vehicular traffic at delivery and storage doorways.
6) Can I use the NGP 513HD as a direct replacement for a Pemko 272 threshold?
Only if the opening allows a narrower saddle. The Pemko 272 is a 6 inch wide flat saddle at 1/4 inch height; the NGP 513HD is 5 inches wide at the same 1/4 inch height. Height and the flat saddle form match, so the transition at the floor behaves the same, but swapping in the 513HD leaves an inch of exposed sill or existing fastener holes where the 272 sat. On a straight like-for-like replacement of a 272, stay with the 6 inch profile; the 513HD is the choice for a new 5 inch layout or where a fluted traction surface is wanted for forklift traffic.
7) What finishes does the NGP 513HD heavy duty threshold come in, and is there a slip resistant option?
Mill finish aluminum and dark bronze are the two stocked finishes, both across every length. Mill is the standard for back-of-house and dock openings where appearance is secondary; dark bronze suits a service entrance that faces a tenant corridor or matches bronze anodized storefront. NGP also offers the 513HD with an SIA slip-resistant finish where the doorway is exposed to weather or wash-down and the fluted top alone is not enough traction.
8) How is the NGP 513HD different from a standard 1/4 inch saddle threshold like the Pemko 272?
Both are flat 1/4 inch high aluminum saddles, so they sit at the same height in the opening. The difference is width and duty. The 513HD is 5 inches wide with a fluted top and a heavy duty extrusion for forklift and vehicular loads. The Pemko 272 Series is a 1/4 inch by 6 inch heavy-duty aluminum flat saddle and is ADA compliant, so it is the one to reach for when the opening is wider and an accessibility call is on the drawing.
9) Can I standardize one threshold across all the service and back-of-house doors in my facility?
Yes, and the 513HD is set up for it. One profile, 5 inches by 1/4 inch, covers single doors at 36 inches and pairs at 72 or 84 inches, in either mill or dark bronze, so every service entrance, dock door and back-of-house opening gets the same part in the same height. Keeping one height across a building matters more than it sounds, mismatched saddle heights are what catch cart wheels and generate trip complaints.
10) What is the difference between the Cal-Royal CR2000 and CR3700 saddle thresholds?
Both are Cal-Royal saddle thresholds and both are fire rated. The CR2000 is described as fire rated with an ADA compliant design; the CR3700 carries a 3-hour positive pressure fire rating. If the door schedule calls out positive pressure and a 3-hour label, the CR3700 series is the one that states it. Where ADA compliance at the sill is the governing requirement, the CR2000 states that on its face.
11) Which saddle threshold should I standardize on across a building with both loading doors and accessible entrances?
Split it by opening duty. At loading and service doors taking forklift and cart traffic, the NGP 513HD in 6063 T5 aluminum with a fluted top is engineered for that load, and it comes in 36, 72 and 84 inch lengths in mill aluminum or dark bronze. At accessible entrances, the Pemko 272 is an ADA compliant flat saddle in 1/4 inch aluminum, and the Cal-Royal CR2000 is an ADA compliant saddle that is also fire rated for labeled openings. All of them are 1/4 inch saddle profiles, so the floor transition stays consistent building-wide even as the part number changes by opening.
12) Is there a lower-profile or simpler alternative if I do not need forklift-rated performance?
The NGP 513HD is a heavy-duty 5 inch saddle carrying a fluted top for traction under vehicular loads, which is more threshold than a standard office or tenant door needs. For an ordinary swing door at a flat sill, the Pemko 272 is a flat saddle in the same 1/4 inch height, ADA compliant, without the fluted traction surface. The Cal-Royal CR2000 saddle is another flat option and adds a fire rated, ADA compliant design if the door is labeled. All three keep the same 1/4 inch rise at the floor, so the change is in top surface and width, not in how far the threshold stands proud of the slab.
13) Will the NGP 513HD threshold corrode at an exterior service door?
The extrusion is 6063-T5 aluminum, an alloy that does not rust and holds up to weather exposure at an exterior service or dock opening. Mill finish leaves the aluminum bare, dark bronze is the finished option if you want a coated surface. For an exterior doorway that gets wet regularly, the SIA slip-resistant top is worth adding, because a wet fluted aluminum surface under a loaded hand truck is where people slip.
How fast can I get the NGP 513HD-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 513HD-36 come with a warranty?
Absolutely. The NGP 513HD-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 513HD-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 513HD-36 from ZenSupply?
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