Cal-Royal BTSR-108 Door Bottom...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.43
Cal-Royal Cal-Royal BTSR-108 Door Bottom Sweep with Rain Drip made of Extruded Aluminum Retainer and Vinyl Insert CAL-BTSR-108

Cal-Royal BTSR-108 Door Bottom Sweep with Rain Drip, Extruded Aluminum Retainer and Vinyl Insert

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Model: BTSR-108AV-36
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$18.43
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Cal-Royal BTSR-108 Door Bottom Sweep with Rain Drip, Extruded Aluminum Retainer and Vinyl Insert

The Cal-Royal BTSR-108 is a surface-mounted door bottom sweep engineered to seal the gap at the bottom of a door, restricting air, light, smoke, sound, and insect infiltration while its rain drip design deflects water away from the threshold. Constructed with an extruded aluminum retainer and a vinyl insert, this sweep measures 9/16" (14.3mm) in width, 1-7/16" (36.6mm) profile height, and 2" (51.3mm) total height. It is compatible with both wood and hollow metal doors and is commonly installed on the exterior of outswing doors for reliable, energy-efficient weather protection.

Key Features

  • Width: 9/16" (14.3mm) for a low-profile, unobtrusive fit at the base of the door.
  • Profile Height: 1-7/16" (36.6mm) providing effective coverage across the door bottom gap.
  • Total Height: 2" (51.3mm) ensuring a secure, full-contact seal.
  • Construction: Extruded aluminum retainer with a vinyl insert delivers long-lasting durability and flexible sealing performance.
  • Rain Drip Design: The BTSR prefix designates a rain drip profile that deflects water away from the door opening, reducing moisture intrusion.
  • Door Compatibility: Designed for use on either wood or hollow metal doors, offering broad application flexibility.
  • Adjustable Mounting: Punched with slotted holes to allow for precise adjustment during installation.
  • Surface-Mounted Application: Mounts to the face of the door and is commonly used on the exterior of outswing doors for effective weather sealing.

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Series: Brush Weatherstrips Series
  • Product Subgroup: Door Bottom Sweeps and Door Shoes
  • Product Type: Door Sweeps and Bottoms
  • 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 BTSR-108?

Cal-Royal weatherstripping products are engineered and tested for durability and reliable performance, meeting or exceeding industry standards for energy-efficient door sealing. The BTSR-108's extruded aluminum retainer and vinyl insert construction, combined with its rain drip design, deliver dependable protection against air, light, smoke, insects, and moisture for demanding commercial door openings.

Product Specs

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

Cal-Royal BTSR-108AV-36 – Frequently Asked Questions

1) Does the Cal-Royal BTSR-108 sweep go on an inswing or an outswing door?
It is built for outswing doors, mounted on the exterior face of the door. That is what the rain drip is for: it kicks water out and away from the threshold instead of letting it run down the face and under the door. On an inswing exterior door the sweep would sit on the interior face where the drip does nothing, so a plain surface sweep without the drip fits that opening better.
2) How much does the Cal-Royal BTSR-108 sweep hang down below the door bottom?
The retainer profile is 1-7/16 inches (36.6mm) with a 2 inch (51.3mm) total height including the vinyl insert, and it projects 9/16 inch (14.3mm) off the door face. Measure your undercut before you order: the vinyl has to reach the threshold or floor to seal, and the 9/16 inch projection has to clear the frame stop and any threshold lip when the door swings.
3) Should I use a vinyl door sweep or a brush sweep at the bottom of an exterior door?
For an exterior opening where you are fighting weather, the vinyl insert on the BTSR-108 is the right call: a solid vinyl blade wipes the threshold and blocks water, air and insects, and the rain drip adds a shed for driven rain. A nylon brush like the NGP 600 1/2 inch nylon brush sweep is the better choice where the floor is uneven or the door drags, since bristles conform and sweep debris, but a brush does not stop water the way a vinyl blade does. Interior doors, mechanical rooms and uneven concrete favor brush; weather-exposed exterior doors favor vinyl.
4) What is the closest equivalent to the Cal-Royal BTSR-108 door sweep if I need a rain drip on the door bottom?
The Cal-Royal BTSR-108 is a surface-mounted door bottom sweep with an extruded aluminum retainer and vinyl insert, and its BTSR prefix designates the rain drip profile that deflects water away from the opening. The nearest cross-brand counterpart that also carries the drip is the Pemko 3452 Surface Plate Rain Drip Door Bottom, which is likewise a surface-applied door bottom with a rain drip. Both mount to the face of the door and are typically applied to the exterior of an outswing door. The BTSR-108 pairs the drip with a vinyl sealing insert in a 9/16 inch wide, 2 inch tall extruded aluminum retainer, so if the sealing element and the drip need to be one piece, specify the BTSR-108; the Pemko 3452 is the substitute when a surface plate rain drip is what the drawing calls out.
5) Is the NGP 101V the same thing as the Cal-Royal BTSR-108?
They are both surface-applied door sweeps with a vinyl seal in an aluminum housing - the NGP 101V is a vinyl door sweep with an aluminum alloy housing, and the Cal-Royal BTSR-108 is an extruded aluminum retainer with a vinyl insert. The difference that matters is the drip: the BTSR prefix on the BTSR-108 designates a rain drip profile that deflects water away from the door opening, and the 101V is a plain vinyl sweep. For an interior or protected opening where you only need to close the gap against air, light, and insects, the 101V covers the same job. For an exterior outswing door where water is running down the face of the door, the 101V is not a substitute for the BTSR-108.
6) What door sweep should I use on a boiler room or kitchen door where vinyl will not hold up?
The Cal-Royal BTSR-108 seals with a vinyl insert, which suits the commercial office, retail, education, healthcare, and multi-tenant openings it is built for. Where the door sees sustained heat, the NGP 200SA is a silicone door sweep in an anodized aluminum housing rated for a temperature range of -100 F to 500 F, and the NGP 197NA is a neoprene door sweep in an anodized aluminum housing. Both are surface-applied sweeps in the same family of installation, so the mounting approach at the door bottom does not change - what changes is the seal material at the contact point.
7) Can the BTSR-108 sweep be installed on a hollow metal door, or is it wood only?
Both. The BTSR-108 mounts to either wood or hollow metal doors. It is a surface application through the face of the door, so on hollow metal you are fastening into the door skin, and on wood into the stile.
8) Can you adjust a Cal-Royal BTSR-108 sweep after it is mounted?
Yes. The retainer is punched with slotted holes, so you can set the height, snug the screws, check the seal against the threshold, and slide it up or down before final tightening. That matters on an existing opening where the undercut is not uniform across the leaf.
9) What finishes does the Cal-Royal BTSR-108 come in, and which one matches dark bronze storefront?
Two: mill finish aluminum and dark bronze anodized aluminum, both with the vinyl insert. Dark bronze anodized is the one that blends with bronze anodized aluminum entrances and dark painted hollow metal frames; mill finish is the plain silver aluminum that suits clear anodized doors or back-of-house openings where appearance is not a factor. Both finishes are offered in 36 inch and 48 inch.
10) I need a door sweep that will hold up to extreme heat or cold. Is the Cal-Royal BTSR-108 the right one?
For a boiler room, freezer, or kitchen door where temperature is the driving factor, look at a silicone insert instead. The NGP 200SA silicone door sweep with anodized aluminum housing is rated for a temperature range of -100 F to 500 F. The BTSR-108 uses a vinyl insert in an extruded aluminum retainer, which is aimed at weather sealing and rain shedding on an exterior outswing door rather than temperature extremes.
11) What do I need besides the sweep to finish an exterior door bottom seal?
The BTSR-108 handles the door bottom and the water shed in one piece on the face of the door. It does not seal the head or the jambs, so a full weather-sealed exterior opening also needs perimeter gasketing at the frame, and it seals against whatever is at the floor, so an exterior opening usually also needs a threshold for the vinyl to wipe against. Fasteners land in the retainer's punched slotted holes, so plan screws for the door material, wood stile or hollow metal skin.
12) We need a low-emitting door sweep for a LEED job - what is the alternative to the Cal-Royal BTSR-108?
The Cal-Royal BTSR-108 seals with a vinyl insert carried in an extruded aluminum retainer. If the specification requires a third-party low-emissions certification on the sealing element, the Pemko 345V is a professional door bottom sweep with a GREENGUARD Gold certified Eco-V insert, and the Pemko 56 Series door bottom sweep uses the same Eco-V insert in a 36 inch length. All three are surface-mounted door bottom sweeps that fasten to the face of the door, so the install detail is comparable; the Eco-V units are what to submit when the certification itself is the line item on the spec.
13) I want the fasteners hidden on a lobby door - does the Cal-Royal BTSR-108 do that?
The Cal-Royal BTSR-108 is punched with slotted holes so the sweep can be adjusted up or down as it is fastened, which leaves the fastener heads visible on the face of the retainer. Where the appearance of exposed screws is the objection, the Pemko 29326NB is a 36 inch brush door bottom sweep in clear anodized aluminum with a concealed fastener design. Note the trade before you swap: the 29326NB seals with a brush and the BTSR-108 seals with a vinyl insert and adds a rain drip, so on an exterior outswing opening the concealed-fastener unit is a different seal, not just a different screw pattern.
14) Can I use a door sweep instead of a full door shoe or door bottom on an out-swinging exterior door?
For an outswing exterior door, the Cal-Royal BTSR-108 mounts to the exterior face of the door and combines the seal and the rain drip in a single 9/16 inch wide, 1-7/16 inch profile height extruded aluminum retainer with a vinyl insert, on wood or hollow metal doors. If the opening instead calls for the drip as a separate surface plate over an existing bottom condition, the Pemko 3452 is a surface plate rain drip door bottom. If no drip is required at all and the door only needs the gap closed, a straight surface sweep such as the NGP 101V vinyl door sweep with aluminum alloy housing does that part. Which one is correct depends on whether water management at the head of the sweep is part of the job.
15) What does the BTSR-108 door sweep actually seal out?
Air, light, smoke, sound, and insects at the door bottom gap, plus water thrown at the opening, which the rain drip deflects clear of the threshold. It is an extruded aluminum retainer holding a flexible vinyl insert, and the vinyl is the part that does the sealing by riding against the floor or threshold.
16) Can I replace just the vinyl on a Cal-Royal BTSR-108, or do I have to change the whole sweep?
The BTSR-108 is a two-part assembly, an extruded aluminum retainer carrying a vinyl insert, which is why the finish choices are named for the aluminum and the insert separately. That construction is what lets a facility keep the same retainer on the door across the life of the opening while the wear happens in the vinyl. If you are standardizing a building, order to the retainer finish (mill or dark bronze anodized) so every opening matches.
17) Is the Cal-Royal BTSR-108 sweep heavy duty enough for a school or hospital entrance?
It is a commercial-grade product, with an extruded aluminum retainer rather than a formed or roll-formed housing, and Cal-Royal lists it for commercial office, educational, healthcare, retail, industrial and warehouse, multi-tenant residential, and government buildings. Extruded aluminum is the reason it survives an entrance that gets kicked and cart-struck; the vinyl insert is the wear item and the part that gets replaced on a maintenance cycle.
18) Which sweep matches a dark bronze storefront package better than a mill finish one?
The Cal-Royal BTSR-108 is offered in dark bronze anodized aluminum with a vinyl insert as well as mill finish aluminum with a vinyl insert, both in 36 inch and 48 inch lengths, so a dark opening can be matched without moving to another brand. Among the cross-brand options, the Pemko 29326NB is a clear anodized aluminum brush sweep and the NGP 197NA and NGP 200SA are supplied in anodized aluminum housings. If the bronze appearance is the driver and the seal needs to be vinyl with a rain drip, the BTSR-108 in dark bronze anodized is the direct answer.
How fast can I get the Cal-Royal BTSR-108AV-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 BTSR-108AV-36 come with a warranty?
Absolutely. The Cal-Royal BTSR-108AV-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 BTSR-108AV-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
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