NGP 229NSS Stainless Steel Aut...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$262.01
NGP 229NSS Stainless Steel Automatic Door Bottom Neoprene Seal

NGP 229NSS Stainless Steel Automatic Door Bottom with Neoprene Seal - BHMA Grade 1 Certified

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Model: 229NSS-36

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

$262.01
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NGP Stainless Steel Automatic Door Bottom with Neoprene Seal - BHMA Grade 1 Certified

Professional Weathersealing Solution for Commercial Applications

The NGP Stainless Steel Automatic Door Bottom delivers superior weathersealing performance with Type 304 stainless steel construction and advanced EPDM rubber seal technology. BHMA certified to ANSI/BHMA A156.22 with Grade 1 rating after 1,000,000 cycle testing, this automatic door bottom operates reliably in temperature ranges from -81 F to 275 F. Available in lengths from 11" minimum to 60" maximum with brushed #4 finish (US32D, 630) and black neoprene seal color.

Professional Features & Benefits

  • BHMA Grade 1 Certification: Tested to 1,000,000 cycles per ANSI/BHMA A156.22 standards for exceptional durability in high-traffic commercial applications.
  • Temperature Performance: Operates reliably from -81 F to 275 F with BHMA certification for heat and cold performance tests.
  • Premium Construction: Type 304 stainless steel housing with synthetic EPDM rubber in polypropylene thermoplastic matrix for superior longevity.
  • Advanced Seal Technology: Closed cell advanced elastomeric foam provides excellent abrasion resistance, tensile strength, and memory retention.
  • Environmental Resistance: Flame-resistant and moisture-resistant design with good resistance to ozone, sunlight, and aging.
  • Flexible Sizing Options: Available in lengths from 11" to 60" with field cutting capability for units 36" and longer (up to 4" reduction).
  • Professional Installation Features: Mounts on push side of door with 7/8" maximum drop and includes end caps as standard equipment.
  • Specialty Options: Optional 1/16" thick lead insert available for enhanced sound control 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: Automatic Door 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 automatic door bottoms deliver professional-grade reliability with Type 304 stainless steel construction and BHMA Grade 1 certification after rigorous 1,000,000 cycle testing. The advanced EPDM rubber seal technology provides exceptional performance across extreme temperature ranges while maintaining superior abrasion resistance and memory retention. Engineered for demanding commercial applications where dependable weathersealing performance is 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 229NSS-36 – Frequently Asked Questions

1) Will the NGP 229NSS automatic door bottom fit a 36 inch wide door?
The 229NSS is sold in 36, 48 and 60 inch lengths, so a standard 3-0 door is covered by the 36 inch unit. Units 36 inches and longer can be field cut up to 4 inches shorter, so a 36 inch piece can be trimmed down to 32 inches for an undersized opening. The series runs from an 11 inch minimum to a 60 inch maximum overall.
2) Which side of the door does the NGP 229NSS automatic door bottom mount on, and how much gap will it seal?
Surface mounts on the push side of the door. The seal drops a maximum of 7/8 inch, so the undercut plus threshold gap has to fall inside that drop or the neoprene will not make contact. Mounting on the push side matters for handing the job: on a pair, each leaf gets its own unit on its own push side.
3) Is the NGP 229NSS door bottom BHMA certified, and to what grade?
BHMA certified to ANSI/BHMA A156.22 with a Grade 1 rating after 1,000,000 cycle testing, including the heat and cold performance tests. For a spec that calls out A156.22 Grade 1 gasketing on a school or hospital corridor, that is the certification line the submittal needs.
4) Can a door bottom sweep be used instead of the NGP 229NSS automatic door bottom?
It can, but they are not the same device and the opening decides which one works. The NGP 229NSS is an automatic door bottom: it mounts on the push side and the seal is held up off the floor until the door closes, dropping up to 7/8 inch to meet the threshold. A sweep such as the Pemko 345 Series door bottom sweep carries its seal in permanent contact with the floor or threshold, so it is the simpler option with no moving mechanism to adjust, and the 345 also carries a rain drip for exterior openings along with a PemkoPrene insert. Choose the sweep where the floor is flat, the gap is consistent, and constant contact is acceptable. Choose the 229NSS where the sweep would drag on carpet or an uneven floor, where the door must swing freely, or where the specification calls for the BHMA Grade 1 rating to ANSI/BHMA A156.22 that the 229NSS holds after 1,000,000 cycle testing.
5) Should I use an automatic door bottom or a door sweep at the base of the door?
An automatic door bottom like the 229NSS retracts when the door opens and drops the seal only when the door closes, so nothing drags across the floor or the carpet. A surface sweep such as the Pemko 345 Series rides in contact with the floor all the time and is the simpler, fixed option where you have hard flooring and clearance to spare. If the door swings over carpet, a threshold, or an uneven floor, the retracting type is what you want.
6) Will a stainless automatic door bottom hold up in a walk-in freezer or a boiler room?
The 229NSS is rated from -81 F to 275 F, which brackets both freezer vestibules and mechanical rooms. Housing is Type 304 stainless steel and the seal is synthetic EPDM rubber in a polypropylene thermoplastic matrix, flame resistant and moisture resistant with good resistance to ozone, sunlight and aging.
7) What finish is the NGP 229NSS, and will it match the other stainless hardware on my doors?
Brushed #4 stainless, which is US32D / BHMA 630, the same satin stainless designation used on commercial push plates, hinges and exit device trim. The seal itself is black neoprene. If a building is standardized on 630 hardware, the 229NSS drops in without a finish mismatch at the bottom rail.
8) What else does ZenSupply carry if I need a surface mount automatic door bottom other than the NGP 229NSS?
The Pemko SA Series surface mount automatic door bottom is the closest cross-brand equivalent, and its Eco-V insert is GREENGUARD Gold certified, which matters on LEED and low-emitting-materials submittals. Both are surface applied automatic door bottoms; the NGP 229NSS is the one to take when the spec names A156.22 Grade 1 or the temperature swing is extreme.
9) For an exterior door that needs to shed water, is the NGP 229NSS the right choice or is there a better option?
For an exterior opening where rainwater runs down the face of the door, the Pemko 345 Series door bottom sweep is built for that condition specifically: it includes a rain drip along with its PemkoPrene insert, so water is thrown clear of the bottom rail rather than tracking to the sill. The NGP 229NSS is a stainless steel automatic door bottom with a black EPDM neoprene seal and no integral rain drip, and its strengths on an exterior door are elsewhere: a Type 304 stainless housing for corrosion service, a rated range of -81 F to 275 F, and moisture resistance with good resistance to ozone, sunlight and aging. A common resolution on exterior openings is to use the 229NSS for the seal at the sill and add a separate rain drip above it, which keeps the automatic action and the water management as two parts doing one job each.
10) What automatic door bottom works for sound control on a conference room or exam room door?
The NGP 229NSS is the one to specify when acoustic performance is part of the requirement, because it is offered with an optional 1/16 inch thick lead insert for sound control applications, and its closed cell advanced elastomeric foam seal holds memory so the seal keeps its shape against the sill over time. The Pemko SA Series surface mount automatic door bottom is the alternative automatic unit, built around a GREENGUARD Gold certified Eco-V insert, which is an indoor air quality credential rather than an acoustic one. Both drop a seal only on closing, which is what makes either suitable for a room where a dragging sweep would be audible.
11) Can an automatic door bottom help with sound transmission between rooms?
An optional 1/16 inch thick lead insert is available on the 229NSS for sound control work. The closed cell elastomeric foam seal is what does the sealing; the lead adds mass in the channel where you are chasing STC on an office demising door or a music room.
12) Do I need to order end caps separately with the NGP 229NSS?
End caps ship as standard equipment with the 229NSS, so nothing extra to add on the order line. Decide length and whether you want the lead insert; that is the whole configuration.
How fast can I get the NGP 229NSS-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 229NSS-36 come with a warranty?
Absolutely. The NGP 229NSS-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 229NSS-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 229NSS-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.
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