NGP 136PDKB 36 Polypropylene P...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$49.36
NGP NGP 136PDKB Polypropylene Pile Mortised Astragal, 36", Dark Bronze NGP-136PDKB 36

NGP 136PDKB 36 Polypropylene Pile Mortised Astragal 36" Dark Bronze Aluminum

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Model: 136PDKB 36
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NGP Polypropylene Pile Mortised Astragal 36" Dark Bronze Aluminum

Professional Door Weathersealing Solution

The NGP Polypropylene Pile Mortised Astragal provides effective weathersealing for commercial door applications with a 36" length and dark bronze aluminum finish. Constructed from aluminum alloy 6063 with T5 temper for durability, this astragal features mortise dimensions of 7/16" wide x desired depth for precise installation. The gray polypropylene pile provides reliable sealing performance while the dark bronze finish complements commercial door hardware.

Professional Features & Benefits

  • Precise Mortise Dimensions: 7/16" wide x desired depth mortise configuration ensures accurate installation and optimal sealing performance.
  • Durable Aluminum Construction: Aluminum alloy 6063 with T5 temper provides exceptional strength and corrosion resistance for long-term commercial use.
  • Effective Pile Weatherseal: Gray polypropylene pile creates reliable barrier against air infiltration and weather penetration.
  • Professional Dark Bronze Finish: DKB dark bronze aluminum finish provides attractive appearance that coordinates with commercial door hardware.
  • Complete Hardware Included: #2 SMS fasteners furnished for convenient installation without additional hardware requirements.
  • Commercial-Grade Performance: Engineered specifically for commercial applications requiring dependable weathersealing and professional appearance.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Lock Type: Mortise
  • Product Category: Door Trim and Accessories
  • Product Group: Door Trim and Accessories
  • Product Subgroup: Astragals, Gaskets and Weatherstripping
  • Product Type: Astragals
  • 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 astragal products deliver professional-grade weathersealing performance with aluminum alloy 6063 T5 temper construction for demanding commercial applications. The precision-engineered mortise dimensions and included SMS fasteners ensure reliable installation and long-term sealing effectiveness. Engineered for commercial environments where dependable weather protection and professional appearance are essential.

Product Specs

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

NGP 136PDKB 36 – Frequently Asked Questions

1) What does the NGP 136PDKB mortised astragal seal, and where does it go on the door?
The 136PDKB is a mortised astragal for commercial door weathersealing. It sets into a mortise cut in the door edge rather than surface-mounting, and the gray polypropylene pile compresses against the mating surface to block air infiltration. Because it is mortised in, the aluminum body sits flush with the edge instead of standing proud of it, so it does not add to the door width the way a surface-applied T-astragal does.
2) What size mortise do I need to cut for the NGP 136PDKB astragal?
Cut the mortise 7/16 inch wide by the depth you need to seat the astragal. That 7/16 inch width is the number that decides whether it drops in, so route to it before you order the router bit for the run.
3) I have a pair of doors with no mullion. Is a mortised pile astragal like the NGP 136PDKB the right choice, or should I use a T-astragal?
It depends on whether you are willing to machine the door. A mortised pile astragal like the 136PDKB is routed into the edge and seals with brush pile, so nothing projects into the gap and the doors keep their clear opening. A surface T-astragal, such as the Cal-Royal EAST-501 with a vinyl insert, screws on instead of being mortised and overlaps the meeting stiles, which is the faster retrofit on doors already hung. Pemko's 300 Series adjustable astragal uses self-adjusting pile brush for pairs where the gap between leaves is inconsistent. Pick the mortised version when you want a clean edge and are cutting the doors anyway; pick surface-applied when you are working on an existing pair in the field.
4) Is the NGP 136PDKB astragal the same thing as a lock astragal for a mortise lock?
No, and this trips people up. The 136PDKB is a weatherseal astragal, an aluminum extrusion with a pile insert that closes the gap against air infiltration. A lock astragal is a different part entirely: the Trimco 5001 in stainless steel is made for use with mortise or cylindrical locks, and the Trimco 5002, at 1-9/16 by 6 inches, is for cylindrical locks. If what you actually need is a plate that covers the meeting stile at the lock, order one of those, not a pile weatherseal.
5) What can be used instead of the NGP 136PDKB astragal when the door edge cannot be mortised?
The NGP 136PDKB is a mortised astragal - it seats in a 7/16" wide mortise cut into the door edge, with the gray polypropylene pile doing the sealing. If the edge cannot be routed, the Cal-Royal EAST-501 is an aluminum T-astragal with a vinyl insert for double doors, and the Pemko 300 Series is an adjustable astragal with a self-adjusting pile brush, also for double doors. Both apply as astragal stock across the meeting edge rather than being let into it, so the door does not have to be prepped.
6) Will a Trimco 5001 lock astragal work as a substitute for the NGP 136PDKB?
No - the two do different jobs despite sharing the word astragal. The NGP 136PDKB carries a gray polypropylene pile that seals against air and weather infiltration along the door edge. The Trimco 5001 is a stainless steel lock astragal used with mortise or cylindrical locks, and the Trimco 5002 is the stainless steel version at 1-9/16" x 6" for use with cylindrical locks. Those are short lock-area pieces tied to the lock prep, not a full-length weatherseal, so ordering one in place of the NGP leaves the meeting edge unsealed.
7) Will one NGP 136PDKB cover a standard 3-foot door?
The 136PDKB comes in a 36 inch length, which matches the width of a standard 3-0 door leaf. For a mortised astragal running the height of the door edge instead, you would need a longer piece, so check which axis the 36 inches has to span on your opening before ordering.
8) Do I need to buy screws separately for the NGP 136PDKB astragal?
No. #2 sheet metal screws are furnished with the astragal, so the fasteners come in the box.
9) Is the NGP 136PDKB astragal aluminum or plastic, and will it hold up outdoors?
The body is aluminum alloy 6063 with T5 temper, finished dark bronze (DKB). Only the seal insert is plastic, a gray polypropylene pile. 6063-T5 is the standard extrusion alloy used for commercial door weatherstrip, and it resists corrosion at an exterior opening; the pile is the wear part that eventually gets replaced, not the extrusion.
10) Which astragal should be used on a pair of doors that has a mortise lock in it?
Those are two separate parts and a facility often needs both. The NGP 136PDKB is the mortised weatherseal astragal, in aluminum alloy 6063 T5 with a gray polypropylene pile, and it handles the air seal along the edge. The Trimco 5001 is a stainless steel lock astragal made for use with mortise or cylindrical locks, covering the gap at the lock. The Trimco 5002, at 1-9/16" x 6" stainless steel, is for use with cylindrical locks only, so it is not the one to pick if the pair is fitted with mortise locks.
11) What is the difference between a pile astragal like the NGP 136PDKB and a vinyl insert astragal?
The sealing element is what changes. The NGP 136PDKB uses a gray polypropylene pile set into a 7/16" wide mortise, which sweeps against the mating edge and tolerates the small variations you get between two active leaves. The Cal-Royal EAST-501 is an aluminum T-astragal with a vinyl insert for double doors, so it seals by compression against a bulb or blade rather than by brush contact. The Pemko 369 also runs a pile brush insert, in a 13/32" x 11/32" aluminum split astragal profile.
12) For a pair of doors where the gap between leaves varies, is there an alternative to the NGP 136PDKB?
The NGP 136PDKB is a fixed mortised profile - it seats in a 7/16" wide mortise and the pile height is what it is. Where the meeting stile gap is inconsistent, the Pemko 300 Series is an adjustable astragal with a self-adjusting pile brush for double doors, which lets the brush take up the variation after the doors are hung. The Pemko 369 is a split astragal seal, meaning it is applied as two halves so each leaf gets its own piece.
13) What finish does the NGP 136PDKB come in, and will it match my other bronze door hardware?
Dark bronze is the only finish this astragal is offered in. It is an anodized-look dark bronze on the aluminum extrusion, which is the usual pairing for bronze-tone commercial thresholds, door shoes, and frames. If your building standard is mill or clear aluminum, this is the wrong piece for the run.
14) Is the NGP 136PDKB astragal meant for commercial openings or will it work on a house?
It is built for commercial service. NGP lists it as a commercial product, and the 6063-T5 aluminum extrusion with a mortise-in installation is what gets specified in office buildings, schools, healthcare, retail, warehouses, multi-tenant residential, and government facilities. It will physically work on a residential door, but the mortise cut means it is not a screw-on retrofit for someone who does not want to machine the edge.
15) Is there a stainless steel astragal instead of the dark bronze aluminum NGP 136PDKB?
For weathersealing, the NGP 136PDKB is aluminum alloy 6063 with T5 temper in a dark bronze finish, and the comparable seals hold to aluminum as well - the Pemko 369 split astragal seal is a 13/32" x 11/32" aluminum extrusion and the Cal-Royal EAST-501 is an aluminum T-astragal. Stainless steel shows up in the lock astragals: the Trimco 5001 and the Trimco 5002 are both stainless steel, but those cover the lock area rather than sealing the edge.
How fast can I get the NGP 136PDKB 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 136PDKB 36 come with a warranty?
Absolutely. The NGP 136PDKB 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 136PDKB 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 136PDKB 36 from ZenSupply?
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