NGP 229SSS Stainless Steel Aut...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$277.40
NGP 229SSS Stainless Steel Automatic Door Bottom with Silicone Seal - BHMA Grade 1 Certified

NGP 229SSS Stainless Steel Automatic Door Bottom with Silicone Seal - BHMA Grade 1 Certified

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Model: 229SSS 36 RH

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

$277.40
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NGP Stainless Steel Automatic Door Bottom with Silicone Seal - BHMA Grade 1 Certified

Professional Automatic Door Sealing Solution

The NGP Stainless Steel Automatic Door Bottom delivers professional-grade sealing performance with BHMA Grade 1 certification to ANSI/BHMA A156.22 standards. Featuring Type 304 stainless steel construction with siloxane closed cell sponge seal material, this automatic door bottom provides reliable sealing across temperature ranges from -100 F to 500 F. Available in lengths from 11" minimum to 60" maximum with 7/8" maximum drop capability for versatile door applications.

Professional Features & Benefits

  • BHMA Grade 1 Certification: Certified to ANSI/BHMA A156.22 with 1,000,000 cycle testing for exceptional durability in high-traffic commercial applications.
  • Temperature Performance: BHMA certified performance tests for heat and cold with operational range from -100 F to 500 F maintaining flexibility at extreme temperatures.
  • Premium Construction: Type 304 stainless steel housing with brushed #4 finish (US32D, 630) provides corrosion resistance and professional appearance.
  • Advanced Seal Material: Siloxane closed cell sponge offers excellent flexibility, memory, and resistance to ozone, UV, and aging for long-term sealing performance.
  • Fire Suppression Compatibility: Flame resistant construction recommended for areas using FM200 or Halon Fire Suppression Systems.
  • Flexible Sizing Options: Available in lengths from 11" to 60" with field cutting capability for 36" and longer units (up to 4" reduction).
  • Installation Versatility: Mounts on push side of door with threshold compatibility for maximum sealing or nylon brush option for carpet applications.
  • Moisture Protection: Moisture resistant seal material with 7/8" maximum drop provides effective barrier against air and water infiltration.

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: Automatic Door Bottoms
  • Subcategory: Gaskets & Weatherstripping

Professional Applications

  • Commercial Office Buildings
  • Healthcare Institutions
  • Educational Facilities
  • Fire Suppression System Areas
  • Climate-Controlled Environments
  • Sound Control Applications
  • Energy Efficiency Retrofits

Why Choose NGP Quality?

NGP automatic door bottoms deliver professional-grade reliability with Type 304 stainless steel construction and BHMA Grade 1 certification rated for 1,000,000 cycles. The advanced siloxane seal material maintains flexibility across extreme temperature ranges while providing superior resistance to environmental factors. Engineered for demanding commercial applications where dependable sealing performance and long-term durability are essential.

Product Specs

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

NGP 229SSS 36 RH – Frequently Asked Questions

1) How big a gap under the door can the NGP 229SSS seal close?
Up to 7/8 inch of drop. That is the seal's maximum travel below the housing, so measure your worst gap at the threshold or floor with the door closed. If the undercut is bigger than 7/8 inch you need a different approach, either a raised threshold to bring the floor up or a sweep sized for the gap.
2) Does the NGP 229SSS mortise into the door or surface mount?
It mounts on the push side face of the door, not in a routed pocket, so there is no milling of the door bottom rail. That makes it a straightforward retrofit on an existing opening. It seals against a threshold for the tightest close, or you can specify the nylon brush version where the door lands on carpet.
3) Is the NGP 229SSS door bottom BHMA Grade 1 and how many cycles is it rated for?
Grade 1 to ANSI/BHMA A156.22, tested to 1,000,000 cycles. For a facility standardizing on one door bottom across high traffic openings, that cycle number is the specification line that matters, and it comes with BHMA certified heat and cold performance testing as well.
4) What is the closest surface mount automatic door bottom to the NGP 229SSS in a 36 inch length?
The Pemko SA Series in 36 inch is the closest peer: it is a surface mount automatic door bottom, the same product function as the NGP 229SSS, and it carries a GREENGUARD Gold certified Eco-V insert. The NGP 229SSS differs in the materials it is built from - Type 304 stainless steel housing with a brushed #4 finish (US32D, 630) and a siloxane closed cell sponge seal rated from -100 F to 500 F, with BHMA Grade 1 certification to ANSI/BHMA A156.22 and a 1,000,000 cycle rating. If the specification on the drawing calls for a low-emitting insert material, the Pemko SA is the one written to that; if it calls for a BHMA Grade 1 automatic door bottom or an extreme temperature seal, the 229SSS is.
5) Do I need an automatic door bottom, or will a door bottom sweep seal the gap?
A door bottom sweep such as the Pemko 345 Series in 36 inch seals with a fixed insert - a PemkoPrene insert with a rain drip - that rides at a constant height and stays in contact with the floor or threshold all the time. An automatic door bottom like the NGP 229SSS carries a drop seal, up to 7/8 inch of drop, that retracts when the door opens and deploys when it closes. Where the floor covering changes, where the door swings over carpet, or where an ADA path cannot tolerate a fixed sweep dragging, the drop action is what makes the difference. Where the opening has a flat threshold and the gap is constant, the fixed sweep does the same sealing job with no moving parts and the rain drip adds shedding on an exterior door.
6) Do I need a threshold under an NGP 229SSS automatic door bottom?
Not required, but it changes the result. Landing the seal on a threshold gives the tightest close against air and water infiltration. Over carpet, order the nylon brush option instead, since a solid seal on pile will not compress evenly. Either way the maximum drop is 7/8 inch, so the finished floor or threshold height has to put the gap inside that.
7) Will a stainless automatic door bottom hold up in a wet or corrosive area like a kitchen or pool room?
The 229SSS housing is Type 304 stainless with a brushed #4 finish (US32D, 630), which is the corrosion resistant choice over aluminum for washdown areas, coastal buildings and pool enclosures. The siloxane closed cell sponge seal is moisture resistant and holds up to ozone, UV and aging.
8) Which automatic door bottom holds up in a room with an FM200 or Halon fire suppression system?
The NGP 229SSS is the one written for it - its construction is flame resistant and recommended for areas using FM200 or Halon fire suppression systems, and the siloxane closed cell sponge seal holds flexibility from -100 F to 500 F with resistance to ozone, UV, and aging. The Pemko SA Series 36 inch is also a surface mount automatic door bottom and is the comparable to look at on function, with its Eco-V insert carrying GREENGUARD Gold certification, a low-emitting materials credential rather than a temperature or flame one. For a data room, a clean agent protected space, or a mechanical room, match the seal material to the temperature and agent exposure first.
9) What should I use on an exterior door instead of the NGP 229SSS?
For an exterior opening where shedding water off the face of the door matters, the Pemko 345 Series 36 inch door bottom sweep includes a rain drip along with its PemkoPrene insert - the drip is the feature an automatic door bottom does not carry. The NGP 229SSS is a moisture resistant seal with a 7/8 inch drop that mounts on the push side of the door and seals to a threshold, and its Type 304 stainless steel housing with brushed #4 finish is built for corrosion resistance. On an exterior door the two are often specified together: the sweep with rain drip on the face, or the 229SSS where the drop action is needed and the drip is handled by a separate rain guard.
10) I need to standardize automatic door bottoms across a facility - how do the NGP 229SSS and the Pemko SA Series line up?
Both are surface mount automatic door bottoms in a 36 inch length, so they mount the same way on the push side and cover the same common door width without changing the door prep. The NGP 229SSS is certified to ANSI/BHMA A156.22 at Grade 1 with a 1,000,000 cycle rating and BHMA performance tests for heat and cold, and comes in lengths from 11 inch to 60 inch with field cutting up to 4 inches on units 36 inch and longer, which is what lets one part number cover a mixed set of door widths. The Pemko SA Series is specified around its GREENGUARD Gold certified Eco-V insert. If the facility standard is written to a BHMA grade and cycle count, the 229SSS answers it directly; if it is written to indoor air quality certification, the SA Series does.
11) Do I have to specify handing when ordering an automatic door bottom?
For the NGP 229SSS you do - it is ordered left-handed or right-handed in the 36 inch length, because the actuating plunger sits at one end of the housing and has to land on the hinge side stop. Confirm the swing before you order. The Pemko SA Series 36 inch is the peer automatic door bottom to check against on the same point. A door bottom sweep like the Pemko 345 Series has no plunger and no handing to get wrong, which is one reason a sweep is simpler to order in quantity for a mixed set of openings.
12) What seals a door that swings over carpet?
The NGP 229SSS handles it two ways: the drop seal clears the carpet on the swing and deploys only when the door closes, and it is offered with a nylon brush option for carpet applications in place of sealing to a threshold. The Pemko SA Series 36 inch is the comparable surface mount automatic door bottom for the same swing-clearance problem. A fixed sweep like the Pemko 345 Series with its PemkoPrene insert stays down through the whole swing, so on carpet it drags and wears - reserve that one for openings with a hard floor or a threshold.
13) What temperature range will the siloxane seal on the NGP 229SSS take?
Minus 100 F to 500 F, and it keeps its flexibility at both ends. That is why it gets specified on freezer vestibules, mechanical rooms and other openings where a standard vinyl or rubber sweep goes stiff in the cold or takes a set in the heat.
How fast can I get the NGP 229SSS 36 RH 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 229SSS 36 RH come with a warranty?
Absolutely. The NGP 229SSS 36 RH 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 229SSS 36 RH?
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
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