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NGP 513 Aluminum Saddle Threshold 1/4" x 5" with Fluted Top
Professional Door Threshold Solution
The NGP 513 Saddle Threshold delivers commercial-grade performance with precision-engineered aluminum alloy 6063 construction in T5 temper. This 1/4" x 5" threshold features a fluted top surface for enhanced traction and is BHMA certified to ANSI/BHMA A156.21 with 1,000 lb. load test rating. At 0.68 lbs./ft. weight with 0.125" typical wall thickness, it provides durable transition protection for high-traffic commercial applications.
Professional Features & Benefits
- Precision Dimensions: 5" wide x 1/4" tall profile designed for standard door applications with optimal clearance and transition performance.
- Heavy-Duty Load Rating: BHMA certified to ANSI/BHMA A156.21 with 1,000 lb. load test for reliable performance in demanding commercial environments.
- Premium Aluminum Construction: Aluminum alloy 6063 with T5 temper provides exceptional durability and corrosion resistance for long-term performance.
- Enhanced Safety Design: Fluted top surface provides improved traction and slip resistance for pedestrian safety.
- Lightweight Engineering: 0.68 lbs./ft. weight with 0.125" typical wall thickness balances strength with easy handling and installation.
- Complete Installation Package: Includes #10 x 1-1/2" FH zinc plated wood screws for secure mounting and professional installation.
- Multiple Finish Options: Available in Aluminum Mill and Dark Bronze finishes, with optional SIA slip-resistant finish for hazardous conditions where safety is a priority.
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 rated for 1,000 lb. load capacity per BHMA certification. ANSI/BHMA A156.21 compliance ensures consistent performance standards for demanding commercial applications. Engineered for demanding commercial applications where dependable performance and pedestrian safety 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 513-36 – Frequently Asked Questions
1) Will the NGP 513 saddle threshold work under a door that's already hung, or do I need to re-cut the door?
At 1/4 inch tall, the 513 is one of the lowest-profile saddles made, so in most cases an existing door clears it without undercutting. The saddle sits 5 inches across the opening, which covers the sill joint on a standard commercial frame. Measure the gap under your closed door first: if you have less than 1/4 inch of clearance at the sill, the door will drag and you'll need to trim the bottom rail.
2) What lengths does the NGP 513 threshold come in, and can I cut it down?
The 513 is stocked in 36, 48, 72, 84 and 96 inch lengths, in Mill Aluminum and Dark Bronze. The 36 inch covers a single 3-0 opening, 72 inch handles a standard pair, and the 84 and 96 inch pieces are there for wide openings or for cutting to a non-standard width. It's 6063-T5 aluminum extrusion with a 0.125 inch typical wall, so it cuts cleanly on a chop saw with a non-ferrous blade.
3) What is a comparable saddle threshold to the NGP 513 if I need a wider top surface than 5 inches?
The NGP 513 is a 1/4 inch by 5 inch aluminum saddle threshold with a fluted top. When the transition needs more coverage across the opening, the Pemko 272 Series is a flat saddle threshold in heavy-duty aluminum at 1/4 inch by 6 inch, giving one more inch of width at the same 1/4 inch height. Both are saddle profiles at the same rise, so the difference the buyer is choosing on is top width and surface: fluted on the NGP 513, flat on the Pemko 272.
4) Is the Pemko 272 a drop-in replacement for an NGP 513 threshold?
Not dimensionally. The Pemko 272 Series is a 1/4 inch by 6 inch flat saddle threshold, so it is an inch wider across the top than the NGP 513, which is 1/4 inch by 5 inch. If the existing anchor pattern and the door stop location were set for a 5 inch saddle, the 6 inch section changes where the threshold edges land relative to the door and the frame. The heights match at 1/4 inch, so floor transition and clearance under the door are comparable; the width and the flat versus fluted top surface are what change.
5) Do I need to buy fasteners separately for the NGP 513 saddle threshold?
No. #10 x 1-1/2 inch flat head zinc plated wood screws ship with the threshold. Those are wood screws, so they suit a wood or plywood sub-sill directly. Over a concrete slab you'll want your own anchors sized to the same #10 screw.
6) Saddle threshold vs. a thermal or panic threshold, which do I need at an exterior door?
A flat saddle like the 513 is a transition piece. It covers the sill joint and gives a clean walking surface between two floor levels or two flooring materials. It does not carry a seal, a stop, or a thermal break, so it doesn't weather the opening on its own. Pair it with a door bottom or sweep if you're stopping air and water, or spec a thermal-break threshold instead. For pure traffic transition on an interior or protected exterior opening, the flat saddle is the right type.
7) What's the difference between the NGP 513 and the Pemko 272 threshold?
Both are flat aluminum saddle thresholds at 1/4 inch height. The difference is width: the 513 is 5 inches across, the Pemko 272 Series is 6 inches. Pick by how much sill you need to cover. If the old threshold left a 6 inch scar in the flooring or the frame sill is wide, the 272 covers it; if you're working a tighter sill or want less material in the walking path, the 5 inch 513 is the one.
8) Which NGP 513 finish should I order to match the rest of my building's door hardware?
Two finishes, and both cover the common cases. Mill Aluminum is the bare mill finish and reads as a light silver, which matches aluminum storefront and clear anodized frames. Dark Bronze matches bronze anodized entrances and dark painted frames. Every length from 36 through 96 inches is offered in both, so you can standardize one finish across an entire building without changing product on the wider openings.
9) Is there a slip resistant version of the NGP 513 threshold for a wet entry?
Yes. Beyond the fluted top, which is the standard traction surface on the 513, an optional SIA slip-resistant finish is offered for hazardous or wet conditions. Specify SIA on the order when the threshold sits at an entry that takes rain, snowmelt, or washdown.
10) What is the difference between the Cal-Royal CR2000 and CR3700 saddle thresholds when I am cross-shopping against an NGP 513?
The Cal-Royal CR2000 Series is a saddle threshold with a fire rated and ADA compliant design, while the Cal-Royal CR3700 Series is a saddle threshold specified with a 3-hour positive pressure fire rating - the positive pressure qualifier is the distinguishing item between the two series. The NGP 513 sits alongside both as an aluminum alloy 6063 T5 saddle threshold, 1/4 inch by 5 inch, with a fluted top for traction. All three are saddle profiles, so the decision is what the opening's rating and pedestrian surface require.
11) I need a slip resistant walking surface on the threshold - which of the aluminum saddles gives me that?
The NGP 513 carries a fluted top surface for improved traction, and it is offered with an optional SIA slip-resistant finish for hazardous conditions. The Pemko 272 Series, by contrast, is a flat saddle threshold in heavy-duty aluminum. Where the walking surface itself is the deciding factor - wet entries, kitchens, garage transitions - the fluted top and the SIA option are the specific NGP 513 features that address it.
How fast can I get the NGP 513-36 delivered?
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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 513-36 come with a warranty?
Absolutely. The NGP 513-36 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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