NGP 678A Concealed Fastener Do...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$44.86
NGP 678A 3/4" Concealed Fastener with Nylon Brush Sweep, Anodized Aluminum

NGP 678A Concealed Fastener Door Sweep with Nylon Brush and Anodized Aluminum Construction

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Model: 678A-33

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

$44.86
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NGP Concealed Fastener Door Sweep with Nylon Brush and Anodized Aluminum Construction

Professional Door Bottom Sealing Solution

The NGP concealed fastener door sweep combines durable anodized aluminum construction with synthetic polyamide nylon brush material for effective door bottom sealing. This commercial-grade door sweep features aluminum alloy 6063 with T5 temper construction and operates effectively in temperature ranges from -70 F to 425 F. The concealed fastener design includes slotted screw holes for precise adjustment and comes complete with #6 x 3/4" stainless steel sheet metal screws.

Professional Features & Benefits

  • Temperature Performance: Operates reliably from -70 F to 425 F for extreme climate applications and demanding environmental conditions.
  • Durable Construction: Aluminum alloy 6063 with T5 temper provides exceptional strength and corrosion resistance for long-term commercial use.
  • High-Performance Brush Material: Synthetic polyamide construction offers excellent abrasion resistance, flexibility, and memory retention for consistent sealing performance.
  • Moisture and Chemical Resistance: Moisture-resistant design retains insecticides well and maintains performance in humid conditions.
  • Concealed Fastener Design: Clean appearance with slotted screw holes for precise adjustment and professional installation aesthetics.
  • Complete Hardware Package: Includes #6 x 3/4" stainless steel sheet metal screws for secure mounting and corrosion resistance.
  • Environmental Compliance: REACH and RoHS compliant materials meet current environmental and safety standards.
  • Optional Fast Attach Tape: FATT option available for alternative mounting applications requiring adhesive installation.

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 reliability with aluminum alloy 6063 T5 temper construction and synthetic polyamide brush materials rated for extreme temperature performance from -70 F to 425 F. REACH and RoHS compliant materials ensure environmental compliance while the moisture-resistant design maintains consistent sealing performance. Engineered for demanding commercial applications where dependable door bottom sealing is essential.

Product Specs

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

NGP 678A-33 – Frequently Asked Questions

1) What lengths does the NGP 678A brush door sweep come in?
The 678A concealed fastener sweep is stocked in 33 inch and 36 inch lengths. Aluminum sweeps like this are routinely cut down on site to the exact door width, so on a standard 36 inch commercial door leaf you would take the 36 inch and trim it to suit the frame rebate; the 33 inch covers narrower leaves and closet or utility doors without cutting.
2) Will a nylon brush door sweep seal better than a rubber or neoprene one on an uneven threshold?
Brush is the right choice where the floor is not flat or the door drags. The 678A uses a synthetic polyamide brush, which flexes over sills, carpet edges and worn concrete without binding the door, and it holds its memory so it springs back instead of taking a set. A solid insert seals tighter against air and water on a true, level threshold, which is what the Cal-Royal BTN-112 neoprene insert sweep or the Pemko 345V with its Eco-V insert are for. Pick brush for sweeping debris, dust and light drafts on rough or uneven openings; pick a solid insert where you are chasing an air seal on a flat floor.
3) I have Pemko brush sweeps on the rest of my doors. Is the NGP 678A a match for them?
Functionally, yes. The Pemko 29326NB is the close equivalent, a 36 inch brush door bottom sweep in clear anodized aluminum with a concealed fastener design, same as the 678A. Both mount to the door face and hide the fastener heads. Screw hole spacing is not interchangeable between brands, so if you are replacing a Pemko unit you will be drilling fresh holes rather than reusing the old ones, but the appearance on the door face will read the same across the openings.
4) Will a brush sweep stop rain from getting under my exterior door?
No. A brush sweep is for drafts, dust, light debris and insects, not for driving rain. Brush fibers pass water. For an exterior opening taking weather, use a rain drip such as the Pemko 3452 surface plate rain drip door bottom to throw water clear of the door bottom, or a solid insert bottom like the Pemko 56 Series with its Eco-V insert. A common build is a rain drip above and a sweep below on the same door.
5) What is the closest brush door sweep to the NGP 678A from another manufacturer?
The Pemko 29326NB is the nearest match. It is a 36 inch brush door bottom sweep with clear anodized aluminum and a concealed fastener design, which mirrors the NGP 678A construction of anodized aluminum with a nylon brush and concealed slotted fastener holes. Both cover a 36 inch door width, so a 36 inch 678A and the 29326NB address the same opening. The 678A also comes in a 33 inch length for narrower doors.
6) The threshold is uneven and a brush sweep will not seal it - what should be used instead?
A flexible insert sweep conforms to an irregular floor better than brush filament. The Cal-Royal BTN-112 uses an extruded aluminum retainer with a neoprene insert, and the Pemko 345V uses a GREENGUARD Gold certified Eco-V insert. The NGP 678A carries a synthetic polyamide nylon brush, which is chosen for abrasion resistance and memory retention rather than for compressing against a high spot.
7) Water is driving under an exterior door - is the NGP 678A the right part?
The 678A is a door bottom sweep with a nylon brush, built for sealing the gap at the bottom of the door across a temperature range of -70 F to 425 F. For driven rain, the Pemko 3452 is a surface plate rain drip door bottom, which combines the bottom seal with a drip that throws water clear of the opening. On a wind-driven exterior entrance the drip style addresses the water path that a brush alone does not.
8) Does the NGP 678A door sweep come with mounting screws, or do I need to supply my own?
Screws are in the box. The 678A ships with #6 x 3/4 inch stainless steel sheet metal screws, so nothing extra is needed for a standard hollow metal or wood door. The holes are slotted, which lets you set the brush height against the floor before you tighten down, then the fastener heads sit concealed for a clean face.
9) Can I install a door sweep without drilling into the door?
NGP offers the FATT fast attach tape option on the 678A for adhesive mounting where you cannot or do not want to drill, which comes up on aluminum storefront leaves, rated doors where the maintenance crew wants no new penetrations, and rental units. Called out that way at order time, it replaces the screw fixing. The standard configuration is mechanically fastened with the supplied stainless screws through the slotted holes.
10) Will an aluminum door sweep hold up on an unheated warehouse or a kitchen door?
Temperature range on the 678A is -70 F to 425 F, which covers unheated warehouse and loading dock openings at one end and hot kitchen or mechanical room doors at the other. The retainer is 6063 aluminum in T5 temper with an anodized finish, so it resists corrosion in wash-down and humid areas, and the brush is moisture resistant. For a facility standardizing across mixed conditions, that one part number works on interior, exterior and back-of-house doors.
11) For a LEED or low-emission project, is there an alternative to the NGP 678A door sweep?
The Pemko 345V carries a GREENGUARD Gold certified Eco-V insert, and the Pemko 56 Series uses the same Eco-V insert in a 36 inch length, so both bring a certified insert material to the submittal. The NGP 678A is built from aluminum alloy 6063 with T5 temper and a synthetic polyamide brush, with REACH and RoHS compliant materials.
12) Will a Pemko 3452 work as a drop-in replacement for an NGP 678A?
They are not the same part. The Pemko 3452 is a surface plate rain drip door bottom, so it mounts as a plate with a drip profile projecting from the door face. The NGP 678A is a concealed fastener sweep with slotted screw holes for height adjustment and a nylon brush, mounted with the supplied #6 x 3/4 inch stainless steel sheet metal screws. Swapping one for the other changes the visible profile on the door and the fastener pattern, so the existing holes will not carry over.
13) Is the NGP 678A sweep rated for commercial use or is it a residential product?
It is a commercial-duty part. The 678A is classed commercial, built on a 6063-T5 anodized aluminum retainer, and NGP lists it for office buildings, schools, healthcare, retail, industrial and warehouse, multi-tenant residential and government facilities. Materials are REACH and RoHS compliant, which matters on public and institutional projects with material disclosure requirements.
14) What does concealed fastener mean on a door sweep, and does it matter?
On the 678A the mounting screws sit behind the aluminum retainer rather than showing across the face of the door, so the finished opening shows a clean anodized line with no row of screw heads. Practically it also means the fasteners are less likely to be picked at or backed out in a public corridor. The slots behind that cover are what let you raise or drop the brush to suit the floor before you tighten it.
15) Which door sweep gives the cleanest look on the face of a door?
The NGP 678A uses a concealed fastener design with slotted screw holes, and the Pemko 29326NB is also a concealed fastener brush sweep in clear anodized aluminum. Both hide the mounting screws behind the sweep body. The Cal-Royal BTN-112 uses an extruded aluminum retainer with a neoprene insert, a different retainer style, and the Pemko 3452 is a surface plate design that sits on the door face.
How fast can I get the NGP 678A-33 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 678A-33 come with a warranty?
Absolutely. The NGP 678A-33 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 678A-33?
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 678A-33 from ZenSupply?
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