NGP 673 3/4" Concealed Fastene...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$52.94
NGP NGP 673 3/4" Concealed Fastener with Nylon Brush Sweep NGP-673

NGP 673 3/4" Concealed Fastener Door Sweep with Nylon Brush and Stainless Steel Hardware

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Model: 673A-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$52.94
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NGP 3/4" Concealed Fastener Door Sweep with Nylon Brush and Stainless Steel Hardware

Professional Door Bottom Sealing Solution

The NGP 3/4" Concealed Fastener Door Sweep combines anodized aluminum construction with synthetic polyamide nylon brush material for effective door bottom sealing. This commercial-grade door sweep features concealed fastener design with #6 x 3/4" stainless steel sheet metal screws and slotted screw holes for precise adjustment. The gray nylon brush material operates effectively in temperature ranges from -70 F to 425 F while maintaining excellent abrasion resistance and flexibility.

Professional Features & Benefits

  • Concealed Fastener Design: 3/4" profile with hidden mounting system provides clean appearance and secure attachment with included stainless steel hardware.
  • Temperature Performance: Operates reliably from -70 F to 425 F for versatile climate applications and extreme temperature environments.
  • Durable Construction: Aluminum alloy 6063 T5 temper frame with anodized finish provides corrosion resistance and long-term durability.
  • High-Performance Brush Material: Synthetic polyamide nylon brush offers excellent abrasion resistance, flexibility, and memory retention for consistent sealing performance.
  • Adjustable Installation: Slotted screw holes allow for precise positioning and alignment during installation for optimal door clearance.
  • Moisture and Chemical Resistance: Moisture-resistant materials with ability to retain insecticides for pest control applications.
  • Environmental Compliance: REACH and RoHS compliant materials meet international environmental and safety standards.
  • Optional Fast Attach System: FATT (Fast Attach Tape) option available for alternative mounting applications.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Bottom Sweeps and Door Shoes
  • Product Type: Door Sweeps and Bottoms
  • Subcategory: Gaskets & Weatherstripping

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 door sweep products deliver professional-grade sealing performance with aluminum alloy 6063 T5 temper construction and synthetic polyamide brush materials rated for extreme temperature operation from -70 F to 425 F. REACH and RoHS compliant materials ensure environmental compliance while providing excellent abrasion resistance and moisture protection. Engineered for demanding commercial applications where reliable door bottom sealing and long-term durability are essential.

Product Specs

Product Group:
Door Trim and Accessories
Product Subgroup:
Door Bottom Sweeps and Door Shoes
Product Type:
Door Sweep and Bottom
Subcategory:
Gaskets & Weatherstripping
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP 673A-36 – Frequently Asked Questions

1) Will the NGP 673 door sweep fit a 36 inch wide door, and what lengths does it come in?
The NGP 673 brush sweep is stocked in 36, 48, and 96 inch lengths. For a standard 36 inch leaf, take the 36 inch piece. The 96 inch length is there for tall or oversized openings and for cutting down to size, and since the frame is 6063 T5 aluminum it cuts cleanly with a hacksaw or chop saw. Both the anodized aluminum and dark bronze finishes are offered in all three lengths.
2) What is a brush door sweep good for, and when should I use a neoprene or vinyl sweep instead?
A nylon brush seal like the NGP 673 rides over uneven, rough, or dirty thresholds without binding, which is why it suits warehouse floors, exterior slabs, and doors that see heavy traffic. The synthetic polyamide brush keeps its memory and resists abrasion, and it holds insecticide for pest control work. Where you want a tighter air and light seal on a flat, clean threshold, a solid insert is the better call: the Cal-Royal BTN-112 uses an extruded aluminum retainer with a neoprene insert, and the Pemko 345V and Pemko 56 Series use an Eco-V insert. Brush for tolerance to a bad floor, solid insert for a tighter seal.
3) Can I adjust the NGP 673 sweep up or down after mounting it to the door?
Yes. The screw holes are slotted, so you can set the brush height against the threshold during install and shift it before you snug the fasteners down. That matters on a door that has settled or on an out-of-level slab, where a fixed-hole sweep leaves you either dragging or gapped. Mounting hardware is included: #6 x 3/4 inch stainless steel sheet metal screws.
4) Will an NGP 673 brush sweep hold up on a walk-in freezer door or a boiler room door?
The nylon brush is rated from -70 F to 425 F, so freezer and cooler doors at one end and mechanical, boiler, and kitchen doors at the other are both inside its range. The frame is anodized 6063 T5 aluminum, which handles the condensation and washdown that come with those rooms. That temperature span is the main reason to pick this over a sweep with a vinyl or rubber insert, which stiffens in the cold and softens with heat.
5) Should I use a brush sweep or a vinyl insert sweep on an exterior door?
They seal differently. The NGP 673 uses a synthetic polyamide nylon brush, which flexes over uneven or slightly out of level thresholds and is rated from -70 F to 425 F with moisture and chemical resistance, and it holds insecticide for pest control work. The Pemko 345V and the Pemko 56 Series instead carry an Eco-V insert, a solid wiping insert rather than filament. A brush sweeps debris and tolerates a rough sill; a solid insert makes continuous contact on a flat, true threshold. Match the choice to the condition of the sill you are sealing against.
6) Will a Pemko 3452 do the same job as the NGP 673?
No, they solve different problems even though both mount at the bottom of the door. The Pemko 3452 is a surface plate rain drip door bottom, so it sheds water running down the face of the door away from the sill. The NGP 673 is a concealed fastener sweep that closes the gap between the door bottom and the threshold with a nylon brush. On a weather exposed exterior opening these are often used together rather than one instead of the other, since a drip does not seal the undercut and a sweep does not divert sheeting water.
7) Do I need to buy screws with the NGP 673 sweep, or is the hardware included?
Hardware comes with it. The 673 ships with #6 x 3/4 inch stainless steel sheet metal screws, and the fasteners sit concealed behind the 3/4 inch profile for a clean face. Stainless is the right screw for an exterior opening where a plated screw would rust and stain the door. If you would rather not drill the door at all, the FATT fast attach tape option is available as an alternative mounting method.
8) I need door sweeps to match dark bronze doors across a building. Does the NGP 673 come in bronze?
Dark bronze is one of the two finishes on the 673, alongside anodized aluminum, and both are offered in 36, 48, and 96 inch lengths. For a fleet of openings that means you can standardize on one part across the property and just change the length per door size. The frame is anodized aluminum, and the brush itself is gray nylon.
9) Will a door sweep stop rain from running under my exterior door?
A brush sweep like the NGP 673 seals the gap at the door bottom and uses moisture-resistant materials, but it is a sweep, not a water diverter. If wind-driven rain is running down the face of the door and under it, you want a drip cap over the top of the opening or a surface-applied rain drip at the bottom, such as the Pemko 3452 surface plate rain drip door bottom, used together with a sweep. Sweep for the gap, drip for the water coming down the door face.
10) I need a low emitting product for a LEED or healthcare project. What is the alternative to the NGP 673?
The Pemko 345V is the one to specify. It is a door bottom sweep built around a GREENGUARD Gold certified Eco-V insert, which is the certification submittal reviewers ask for on schools and healthcare interiors. The NGP 673 is documented on the materials side instead, with REACH and RoHS compliant materials, so if the spec calls for a product certification rather than material compliance, the 345V answers it directly.
11) What is a neoprene alternative if the NGP 673 brush is not right for my openings?
The Cal-Royal BTN-112 is the neoprene option. It is a door bottom sweep with an extruded aluminum retainer and a neoprene insert, so the wiping element is a solid elastomer strip rather than the synthetic polyamide nylon filament used on the NGP 673. Both mount in an aluminum extrusion at the door bottom. Neoprene gives a continuous wipe against a flat sill; the NGP nylon brush is the choice where the sweep has to ride over a rough or debris prone threshold and where the -70 F to 425 F range matters.
12) Are NGP 673 sweeps acceptable for a LEED or environmentally screened commercial spec?
The materials in the 673 are REACH and RoHS compliant. If your spec is chasing a low-emitting materials credit specifically, the Pemko 345V uses a GREENGUARD Gold certified Eco-V insert, which is the certification usually named for that. Both are commercial-grade door bottom sweeps, so the choice comes down to which compliance language the spec calls out.
13) Is the NGP 673 sweep meant for commercial doors or will it work on a house?
It is built as a commercial part, with a 6063 T5 aluminum frame, stainless fasteners, and a polyamide brush specified for abrasion resistance. It mounts to the face of the door bottom with screws, so nothing about it prevents residential use, but the reason to buy it is traffic: office buildings, schools, healthcare, retail, warehouses, multi-tenant residential, and government facilities are where the brush and stainless hardware pay for themselves.
How fast can I get the NGP 673A-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 673A-36 come with a warranty?
Absolutely. The NGP 673A-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 673A-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 673A-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.

Product Reviews

  • 4
    Door Sweep

    Posted by Tyler Coviello on Jun 12th 2025

    What it does: It keeps smoke, drafts, and bugs from sneaking under your door. How it looks: The screws that hold it in place are hidden, so it looks clean and neat.

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