Cal-Royal BW-305 Nylon Brush W...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.38
Cal-Royal Cal-Royal BW-305 Nylon Brush with Extruded Aluminum Seal Retainer CAL-BW-305

Cal-Royal BW-305 Nylon Brush Weatherstrip with Extruded Aluminum Seal Retainer

(No reviews yet) Write a Review

Model: BW-305A-36
Selected Finish is

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

$22.38
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

Cal-Royal BW-305 Nylon Brush Weatherstrip with Extruded Aluminum Seal Retainer

The Cal-Royal BW-305 is an energy-efficient door weather seal engineered to restrict air, light, smoke, and insect infiltration around door openings. This Brush Weatherstrip features a high-quality Nylon Brush encased in an Extruded Aluminum Seal Retainer, with a 1/4" (6.4mm) width, 7/8" (22.2mm) profile height, 1" (25.4mm) insert height, and 1-7/8" (47.6mm) total height. Suitable for use on both Wood and Hollow Metal doors, the BW-305 seals the gap between the bottom of the door and the top of the threshold or floor surface, providing a reliable barrier against drafts, moisture, sound, and fire.

Key Features

  • Width: 1/4" (6.4mm) nylon brush weatherstrip for a precise, low-profile seal.
  • Profile Height: 7/8" (22.2mm) for effective gap sealing at the door bottom.
  • Insert Height: 1" (25.4mm) nylon brush insert for consistent contact and seal integrity.
  • Total Height: 1-7/8" (47.6mm) overall assembly dimension for accurate installation planning.
  • Heavy-Duty Construction: High-quality Nylon Brush encased in an Extruded Aluminum Seal Retainer for durable, long-term performance.
  • Energy-Efficient Sealing: Prevents heat loss and infiltration of sound, light, drafts, insects, moisture, smoke, or fire around the door opening.
  • Versatile Application: Compatible with Wood or Hollow Metal doors for door sweep, jamb/header gasketing, and split astragal applications.
  • Adjustable Mounting: Punched with slotted holes to allow for adjustment during installation.

Technical Specifications

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

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Cal-Royal BW-305?

Cal-Royal weatherstripping products are engineered and tested for durability, combining a high-quality Nylon Brush with an Extruded Aluminum Seal Retainer to deliver reliable, energy-efficient sealing performance. Built for demanding commercial door applications, the BW-305 provides a dependable barrier against drafts, moisture, sound, and smoke while maintaining smooth door operation.

Product Specs

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

Cal-Royal BW-305A-36 – Frequently Asked Questions

1) Will the Cal-Royal BW-305 brush weatherstrip work on a hollow metal door, or is it wood only?
Both. The BW-305 nylon brush weatherstrip mounts to wood or hollow metal doors, which is why it shows up on commercial openings in offices, schools, healthcare, retail, warehouses and multi-tenant residential. The aluminum retainer is punched with slotted holes, so you can shift it up or down a bit while you set the brush contact against the threshold.
2) How much gap at the door bottom will the BW-305 nylon brush actually close?
The brush insert stands 1 inch tall out of a 7/8 inch aluminum profile, for 1-7/8 inch total assembly height, and the strip itself is only 1/4 inch wide. The nylon filament is what bridges the gap between the door bottom and the threshold or floor, and because the retainer is slotted you set the brush compression at install rather than relying on a fixed drop. Plan your bottom rail clearance around that 1-7/8 inch overall dimension.
3) Can the BW-305 be used on the jamb and header, or only as a door sweep?
It works all three ways: door sweep at the bottom, jamb and header gasketing around the frame, and split astragal on a pair of doors. Same 1/4 inch wide brush in the extruded aluminum retainer in each case. That is the argument for stocking one profile instead of separate sweep and gasket parts across a building.
4) What is the difference between the Cal-Royal BW-305 brush weatherstrip and a neoprene insert weatherstrip like the Hager 862S?
The BW-305 uses a nylon brush insert held in an extruded aluminum seal retainer, sealing by brush contact against the door or floor surface. The Hager 862S is a weatherstrip with a neoprene insert for smoke and draft control, so the sealing element is a compressible rubber bulb rather than filament brush. Brush seals tolerate sliding contact and irregular floor surfaces without adding much closing resistance; a neoprene insert compresses against the door face for a tighter continuous contact. The BW-305 comes in 36 inch and 48 inch lengths in Aluminum or Duronodic finish.
5) I need a weatherstrip for a fire-rated door top - is the Cal-Royal BW-305 the right choice?
If the opening calls specifically for a fire-rated head seal, the Pemko 68 door top weatherstrip is supplied in a 40 inch length with a black sponge neoprene insert and is listed as fire-rated. The Cal-Royal BW-305 is a nylon brush weatherstrip in an extruded aluminum retainer used for door sweep, jamb and header gasketing, and split astragal applications on wood or hollow metal doors. Match the seal to what the door label and the hardware schedule require.
6) My frame has a kerf groove instead of a flat stop face - can I use the Cal-Royal BW-305?
The BW-305 mounts with slotted holes punched in its extruded aluminum retainer, so it fastens to a flat surface and is adjustable during installation. For a kerfed frame, the Pemko Q103W series is a kerf-in foam weatherstrip with an extended flange at 1-1/4 inch by 3/16 inch and is fire rated, pressing into the kerf without fasteners. Confirm whether your frame is kerfed before ordering.
7) What lengths and finishes does the Cal-Royal BW-305 brush weatherstrip come in?
Two lengths, 36 inches and 48 inches, each in Aluminum or Duronodic (dark bronze anodized) finish. A 36 inch piece covers a standard 3-0 door bottom; the 48 inch piece is the one to buy if you are cutting to a wider opening or running jamb and header lengths.
8) Brush weatherstrip or a neoprene/foam seal - which should I use on a commercial door?
Nylon brush like the BW-305 is the choice where the door has to sweep over a threshold or uneven floor without dragging, and where you want to block drafts, light, insects and smoke while keeping the door swinging freely. A compression seal behaves differently: Hager's 862S uses a neoprene insert for smoke and draft control, and Pemko's Q103W is a kerf-in foam strip. Those seat against the stop and compress when the door closes, which gives a tighter static seal but no tolerance for floor variation. Brush for the bottom and for sliding contact, compression for the frame stop.
9) For a multi-tenant corridor door that drags on uneven flooring, is a brush seal or a neoprene seal better?
A nylon brush such as the Cal-Royal BW-305 bridges uneven floor and threshold surfaces because the filaments flex independently, and its extruded aluminum retainer is punched with slotted holes so the height can be adjusted at installation. A neoprene insert product like the Hager 862S relies on the rubber compressing evenly along its length, which favors a consistent gap. Choose based on how uniform the gap is across the swing.
10) Does the BW-305 brush weatherstrip match dark bronze door hardware?
Yes, order the Duronodic finish. That is the dark bronze anodized option on the aluminum retainer, and it is the one to spec when the rest of the opening, closer and exit device are in dark bronze. Aluminum finish is the other choice, for clear anodized aluminum storefront and hollow metal frames.
11) Is the BW-305 a commercial-duty weatherstrip or a residential product?
Commercial. Cal-Royal builds the BW-305 with a nylon brush in an extruded aluminum retainer rather than a vinyl or plastic housing, and it is specified for office buildings, schools, hospitals, retail, industrial and warehouse space, multi-tenant residential and government facilities. That extruded housing is what survives an opening cycled hundreds of times a day.
How fast can I get the Cal-Royal BW-305A-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 Cal-Royal BW-305A-36 come with a warranty?
Absolutely. The Cal-Royal BW-305A-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 Cal-Royal BW-305A-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 Cal-Royal BW-305A-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.
!