NGP 818 Cover Plate Threshold ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$397.55
NGP 818 Cover Plate Threshold, Mill Aluminum

NGP 818 Cover Plate Threshold - Mill Aluminum with Custom Width Options

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Model: 818-6X48

In Stock (leaves warehouse same day if ordered before 3pm ET)

$397.55
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NGP 818 Cover Plate Threshold - Mill Aluminum with Custom Width Options

Professional Aluminum Cover Plate Solution for Expansion Joints and Wide Applications

The NGP 818 Cover Plate Threshold delivers professional-grade aluminum construction for expansion joint covers and applications requiring extra width and strength. Manufactured from aluminum alloy 3003 with H14 hardness, this 1/8" tall cover plate accommodates minimum width 2" up to maximum width 48" and maximum length 144" for versatile installation requirements. Each unit includes #10 FH zinc plated wood screws and features a rolled manufacturing process for enhanced durability.

Professional Features & Benefits

  • Custom Sizing Capability: Available in minimum width 2" to maximum width 48" and maximum length 144" for precise fit requirements in expansion joint and wide threshold applications.
  • Heavy-Duty Aluminum Construction: Aluminum alloy 3003 with H14 hardness provides exceptional strength and corrosion resistance for long-term commercial performance.
  • Enhanced Manufacturing Process: Rolled process construction delivers extra durability compared to standard fabrication methods for demanding applications.
  • Professional Installation Hardware: Includes #10 x 1-1/2" zinc plated wood screws for secure mounting and professional appearance.
  • Protective Finish System: PVC coating applied during manufacturing protects the mill aluminum finish during shipping and installation handling.
  • Beveled Edge Design: Standard beveled edges provide smooth transitions and professional appearance unless otherwise specified for custom applications.
  • Flexible Drilling Options: Furnished undrilled with custom drilling available to your specifications for precise installation requirements.
  • Optional Slip-Resistant Finish: SIA slip resistant finish available for enhanced safety in high-traffic 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 Building Expansion Joint Covers
  • Wide Threshold Applications
  • Industrial Facility Floor Transitions
  • Retail Store Entrance Systems
  • Healthcare Facility Corridor Transitions
  • Educational Institution Doorway Solutions
  • Multi-Tenant Building Common Areas

Why Choose NGP Quality?

NGP 818 Cover Plate Thresholds deliver professional-grade reliability with aluminum alloy 3003 H14 hardness construction and rolled manufacturing process for enhanced durability. Custom fabrication capabilities accommodate precise dimensional requirements from 2" to 48" width and up to 144" length. Engineered for demanding commercial applications where dependable performance and custom sizing flexibility 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:
Threshold - Saddle
Subcategory:
Thresholds
Commercial/Residential:
Commercial
Hang Type:
Offset Hung
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP 818-6X48 – Frequently Asked Questions

1) Will the NGP 818 cover plate work over a building expansion joint in a corridor floor?
That is the main thing the 818 is built for. It is a flat aluminum cover plate, 1/8 inch tall, made in widths from 2 inches up to 48 inches and lengths up to 144 inches, so it will span a joint far wider than a normal saddle threshold covers. Because the plate is only 1/8 inch off the floor with beveled edges, foot and cart traffic crosses it without a trip step. It ships undrilled, so you set the fastener pattern to miss the joint and land in sound substrate on both sides.
2) What is the difference between the NGP 818 cover plate and a Pemko 272 saddle threshold?
They solve two different transition problems. The NGP 818 is a 1/8 inch tall mill aluminum cover plate made to order from a minimum width of 2 inches up to a maximum width of 48 inches and up to 144 inches long, in aluminum alloy 3003 H14, furnished undrilled with #10 x 1-1/2 inch zinc plated wood screws. The Pemko 272 is a flat saddle threshold at a fixed 1/4 inch by 6 inch section, described as ADA compliant. If the opening is a normal door sill and you want a stock saddle profile, the 272 is the flat saddle; if you are covering an expansion joint or a floor transition wider than a saddle can span, the 818 is the plate that goes out to 48 inches.
3) Is there an ADA compliant alternative to the NGP 818 for a door sill?
Two in the saddle category are described as ADA compliant: the Pemko 272 flat saddle threshold, a 1/4 inch by 6 inch heavy-duty aluminum section, and the Cal-Royal CR2000 saddle threshold series, which is described as fire rated and ADA compliant. The NGP 818 is a 1/8 inch tall cover plate furnished undrilled with beveled edges as standard, custom cut from 2 inches to 48 inches wide, and it is a plate for covering a joint or transition rather than a saddle profile sized to a door sill. For an accessible entrance sill, the 272 or the CR2000 series is the piece to price.
4) Is a mill aluminum cover plate durable enough for a retail entrance or a hospital corridor?
The 818 is rolled from 3003 aluminum alloy at H14 temper, which is a work-hardened commercial sheet alloy with good corrosion resistance, and NGP rates the product commercial rather than residential. The rolled process gives it more strength than a plain fabricated flat bar. For a high traffic entry where the floor gets wet, order the optional SIA slip resistant finish rather than plain mill.
5) Will a 1/8 inch aluminum cover plate create a trip hazard or a wheelchair problem?
At 1/8 inch tall the plate sits well under the 1/4 inch vertical rise that accessible route guidance treats as needing no bevel at all, and the 818 is beveled at the edges on top of that. So a cart, a stretcher, or a chair rolls across it. Height is the reason to pick a cover plate over a raised saddle when the floor on both sides is already level.
6) I need to match cover plates across several doorways in one building. Can NGP 818 plates be ordered to different widths on the same job?
Yes, width is made to order anywhere from 2 inches to 48 inches, so you can run the same plate profile, same mill aluminum, same beveled edge across openings of different sizes and have them read as one system. Give NGP the width and length per opening, and the drilling pattern if you want them pre-drilled.
7) Can a Cal-Royal CR2000 or CR3700 saddle threshold cover an expansion joint the way the NGP 818 does?
They are not built for that job. The CR2000 and CR3700 are saddle threshold series - the CR3700 carries a 3-hour positive pressure fire rating and the CR2000 is described as fire rated and ADA compliant - and a saddle is a door sill profile. The NGP 818 is a flat cover plate, 1/8 inch tall in aluminum alloy 3003 H14 with a rolled manufacturing process, custom made from 2 inches up to 48 inches wide and up to 144 inches long, with optional SIA slip resistant finish and custom drilling to your layout. Width and length range are what make it the expansion joint cover; the saddle series are specified to a door opening instead.
8) I need a narrow transition strip at a doorway - is the NGP 818 or the Pemko 272 the simpler order?
The Pemko 272 is the stock section: a flat saddle threshold at 1/4 inch by 6 inch in heavy-duty aluminum, ADA compliant, so the profile is fixed and you order it by length. The NGP 818 is fabricated to your dimensions, with a minimum width of 2 inches, and it ships undrilled unless you specify a drilling pattern, which means you set both the width and the hole layout. If a 6 inch flat saddle suits the opening, the 272 takes the sizing decision off your plate; if you need a width the stock section does not give you, the 818 is cut to it.
9) Does the NGP 818 come with a protective coating, and do I need to remove anything after installing it?
A PVC film is applied over the mill aluminum at the factory to keep the surface from getting scuffed in shipping and during install. Leave it on while you drill and fasten, then peel it once the surrounding work is done. Underneath is bare mill aluminum, not an anodized or painted finish, so it will weather to a duller grey outdoors.
10) Is the NGP 818 an offset hung threshold, and what does that mean for my door?
NGP classes the 818 under its offset hung threshold line. That is a flat cover plate, though, with no stop, no rabbet, and no seal race, so it does not itself locate or seal a door leaf. It bridges the floor. If your opening needs a threshold that the door bottom or sweep works against, you want a saddle profile such as the Pemko 272, not a cover plate.
How fast can I get the NGP 818-6X48 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 818-6X48 come with a warranty?
Absolutely. The NGP 818-6X48 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 818-6X48?
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 818-6X48 from ZenSupply?
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