NGP 139SP Steel Fire-Rated Doo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$494.14
NGP NGP 139SP Steel Astragal NGP-139SP

NGP 139SP Steel Fire-Rated Door Astragal with 3/4" Overlap Coverage

(No reviews yet) Write a Review

Model: 139SP-84

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

$494.14
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

NGP Steel Fire-Rated Door Astragal with 3/4" Overlap Coverage

Professional Fire Door Gap Sealing Solution

The NGP Steel Fire-Rated Door Astragal provides essential gap sealing for wood or metal fire-rated doors, ensuring compliance with IBC, NFPA80, and NFPA 252 requirements. This steel astragal maintains the critical 1/8" maximum gap specification at meeting edges while providing minimum 3/4" overlap coverage on inactive doors. Constructed with steel prime coat finish and furnished with #12 x 1-1/4" SMS fasteners for secure installation.

Professional Features & Benefits

  • Code Compliance: Meets IBC, NFPA80, and NFPA 252 requirements for fire-rated door gap specifications not exceeding 1/8" at meeting edges.
  • Minimum Overlap Coverage: Provides 3/4" minimum overlap on inactive door for proper gap sealing and fire protection integrity.
  • Universal Door Compatibility: Can replace manufacturer-required astragals on both wood and metal fire-rated door assemblies.
  • Complete Hardware Package: Furnished with #12 x 1-1/4" SMS fasteners for immediate installation without additional hardware requirements.
  • Durable Steel Construction: Steel prime coat finish provides corrosion resistance and accepts field painting for custom color matching.
  • Lead-Lined Option: Optional 1/16" thick lead insert available for enhanced radiation protection applications when specified as "Lead-Lined".
  • SNB Configuration: Available with SNB specification for specialized installation requirements.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Type: Astragals
  • Series: Steel Astragal Series
  • Subcategory: Gaskets & Weatherstripping

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • Fire-Rated Door Assembly Compliance

Why Choose NGP Quality?

NGP Steel Astragal products deliver professional-grade fire protection compliance with steel construction rated for demanding commercial applications. Engineered to meet strict IBC, NFPA80, and NFPA 252 code requirements with precise 3/4" overlap specifications and 1/8" gap tolerance maintenance. Complete hardware package ensures reliable installation and long-term performance where fire safety compliance is essential.

Product Specs

Product Group:
Door Trim and Accessories
Series:
Steel Astragal Series
Product Subgroup:
Astragals, Gaskets and Weatherstripping
Product Type:
Astragal
Subcategory:
Gaskets & Weatherstripping
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

NGP 139SP-84 – Frequently Asked Questions

1) Will the NGP 139SP astragal work on a fire-rated pair of doors, and does it satisfy the 1/8 inch gap rule?
That is exactly what the 139SP steel astragal is for. It mounts on a pair of fire-rated doors, wood or metal, and covers the meeting edge so the clearance there does not exceed the 1/8 inch maximum that IBC, NFPA 80 and NFPA 252 call for. It laps the inactive leaf by a minimum of 3/4 inch, which is what closes the gap and keeps the assembly compliant.
2) I need an astragal that works around a mortise lock on a pair of doors. Is the NGP 139SP the right one?
No, that is a different part. The 139SP is a full height steel astragal that laps the meeting edge, not a lock astragal. For an opening with a lock at the meeting stile, look at the Trimco 5001 stainless lock astragal, which is made for use with mortise or cylindrical locks, or the Trimco 5002 at 1-9/16 x 6 inches for cylindrical locks.
3) The pair of doors needs a seal against air and light rather than a fire-rated overlap. What astragal handles that?
For a sealing job on a pair, the Pemko 300 Series is an adjustable astragal with a self-adjusting pile brush for double doors, and the Pemko 369 is a split astragal seal with a pile brush insert in aluminum, 13/32 inch by 11/32 inch, and is fire-rated. Both put a brush at the meeting stile. The NGP 139SP is steel with a prime coat finish and works by overlapping the inactive leaf a minimum of 3/4 inch to hold the meeting-edge gap at no more than 1/8 inch per IBC, NFPA 80 and NFPA 252, and it ships with #12 x 1-1/4 inch SMS fasteners. Pick the 139SP when the drawing calls for overlap coverage on a fire-rated pair, and the Pemko 300 or 369 when the goal is a brush seal across the joint.
4) What is the difference between a steel astragal and the Trimco 5001 or 5002 lock astragal?
They solve two different problems on a pair of doors. The NGP 139SP is a full-height meeting-edge astragal, sold in 84 inch and 96 inch lengths, that runs the height of the inactive leaf and carries the minimum 3/4 inch overlap that keeps the gap at the meeting edges within 1/8 inch for IBC, NFPA 80 and NFPA 252. The Trimco 5001 is a stainless steel lock astragal for use with mortise or cylindrical locks, and the Trimco 5002 is a stainless steel lock astragal measuring 1-9/16 inch by 6 inch for use with cylindrical locks. Those are short pieces at the lock area, not a full-height seal, so if the requirement is continuous overlap up the meeting stile the 139SP is the part; if the requirement is a guard at the latch on a pair, the 5001 or 5002 is.
5) Can an aluminum T-astragal be used in place of the NGP 139SP on a fire-rated pair?
They are built differently and it is worth checking the door schedule before swapping. The Cal-Royal EAST-501 is an aluminum T-astragal with a vinyl insert for double doors. The NGP 139SP is steel with a prime coat finish, can replace manufacturer-required astragals on both wood and metal fire-rated door assemblies, and is specified around the code requirement: minimum 3/4 inch overlap on the inactive door and a meeting-edge gap not exceeding 1/8 inch to satisfy IBC, NFPA 80 and NFPA 252. On a fire-rated opening where the astragal is part of the rated assembly, the 139SP is the part written for that condition. The EAST-501 is the aluminum-and-vinyl T-shape for double doors where that construction is what is wanted.
6) Do I need to order screws separately for the NGP 139SP astragal?
No. The 139SP ships with #12 x 1-1/4 inch sheet metal screws, so the fastening hardware for the astragal itself is in the box.
7) Is there a lead-lined version of the NGP 139SP for an X-ray room door?
Yes. The 139SP is offered with an optional 1/16 inch thick lead insert for radiation shielding, which is what you want on imaging suite and X-ray room pairs. It has to be called out as "Lead-Lined" when you order, otherwise you get the standard steel astragal. An SNB configuration is also offered for specialized installation requirements.
8) Which leaf does the NGP 139SP astragal mount to on a pair of doors?
It goes on so that it laps the inactive leaf by at least 3/4 inch, covering the gap between the two doors. That overlap is the whole point of the part, so keep the lap clear of any surface hardware on the inactive door before you fasten it with the supplied #12 x 1-1/4 inch screws.
9) Which astragal is a split type that mounts to both leaves instead of a single overlapping piece?
The Pemko 369 is a split astragal seal with a pile brush insert, aluminum, 13/32 inch by 11/32 inch, and fire-rated. A split astragal puts a piece on each leaf so both doors can be opened independently. The NGP 139SP takes the other approach: it is a steel astragal mounted so it overlaps the inactive door by a minimum of 3/4 inch, which is what holds the meeting-edge gap to 1/8 inch maximum for IBC, NFPA 80 and NFPA 252. On a pair where both leaves must swing freely without the active door being held by an overlapping strip, the split type is the one to look at.
10) For a healthcare imaging suite pair, which astragal handles radiation shielding at the meeting edge?
The NGP 139SP is offered with an optional 1/16 inch thick lead insert for enhanced radiation protection when specified as Lead-Lined, in the same steel astragal that carries the minimum 3/4 inch overlap and the 1/8 inch maximum meeting-edge gap for IBC, NFPA 80 and NFPA 252. Among the alternatives, the Cal-Royal EAST-501 is an aluminum T-astragal with a vinyl insert, the Pemko 300 Series is an adjustable astragal with a self-adjusting pile brush, and the Pemko 369 is an aluminum split astragal seal with a pile brush insert. Those three are built around vinyl and brush inserts, so for the shielded condition the Lead-Lined 139SP is the one written for it.
11) Can I paint the NGP 139SP astragal to match my doors?
Yes. It is steel with a prime coat finish, which is meant to be field painted, so you can match it to the door or frame color on site. The prime coat also gives it corrosion resistance until it is topcoated.
12) Is the NGP 139SP astragal suitable for a commercial building, or is it a residential product?
Commercial. It is specified into office buildings, schools, hospitals, warehouses, multi-tenant residential, and government and municipal facilities, anywhere a fire-rated pair has to hold its meeting edge clearance.
How fast can I get the NGP 139SP-84 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 139SP-84 come with a warranty?
Absolutely. The NGP 139SP-84 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 139SP-84?
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 139SP-84 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.
!