Cal-Royal CR33641 Carpet Thres...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$46.70
Cal-Royal Cal-Royal CR33641 Carpet Threshold, 7/16" H x 4" W CR33641

Cal-Royal CR33641 Carpet Threshold, 7/16" H x 4" W, Heavy Duty Fire Rated

(No reviews yet) Write a Review

Model: CR3364136-AL
Selected Finish is

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

$46.70
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 CR33641 Carpet Threshold, 7/16" H x 4" W, Heavy Duty Fire Rated

The Cal-Royal CR33641 Carpet Threshold is a heavy-duty transition threshold measuring 7/16" H x 4" W, engineered to provide a smooth, barrier-free transition over carpet while meeting demanding commercial fire and life-safety requirements. Available in Aluminum and Dark Bronze finishes, this threshold is designed to be Handicap Accessible and Barrier Free over carpet, making it suitable for high-traffic commercial doorways. Backed by a 3-Hr Positive Pressure fire rating and compliance with UL 10B, UL 10C, and UBC 7-2 (1997) standards, the CR33641 delivers dependable, code-compliant performance for demanding commercial applications.

Key Features

  • Compact Profile: Measures 7/16" H x 4" W, providing a low-profile transition that minimizes trip hazards while maintaining a secure carpet edge.
  • Heavy-Duty Construction: Built for long-term reliability in high-traffic commercial doorways and entryways.
  • Handicap Accessible, Barrier Free over Carpet: Designed to provide a smooth, accessible transition surface over carpet flooring in compliance with accessibility requirements.
  • Fire-Rated Performance: Rated 3-Hr Positive Pressure and meets UL 10B, UL 10C and UBC 7-2 (1997) standards for use in fire-rated door assemblies.
  • Finish-Matched Hardware: MIL finish thresholds are supplied with zinc plated screws; brass thresholds are supplied with brass screws; color anodized thresholds are supplied with screws plated to match; stainless steel thresholds are supplied with stainless steel screws.
  • Finish Options: Available in Aluminum and Dark Bronze finishes to complement a variety of commercial door and floor configurations.

Certifications & Compliance

  • 3-Hr Positive Pressure Fire Rating
  • UL 10B Listed
  • UL 10C Listed
  • Meets UBC 7-2 (1997)

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Product Subgroup: Door Thresholds
  • Product Type: Carpet and Tile Dividers
  • Commercial/Residential: Commercial
  • Product Model: CR33641
  • 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 CR33641?

Cal-Royal thresholds are engineered for heavy-duty commercial use, combining a compact 7/16" H x 4" W profile with proven fire-rated performance certified to UL 10B, UL 10C, and UBC 7-2 (1997). The barrier-free, handicap accessible design over carpet ensures the CR33641 meets the practical and code-driven needs of demanding commercial entryways.

Product Specs

Subcategory:
Thresholds
Product Group:
Door Trim and Accessories
Product Subgroup:
Door Thresholds
Product Type:
Carpet and Tile Dividers
Commercial/Residential:
Commercial
Product Model:
CR33641
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal CR3364136-AL – Frequently Asked Questions

1) Will a 7/16 inch high threshold meet ADA barrier-free requirements over carpet?
The Cal-Royal CR33641 is built as a handicap accessible, barrier free transition over carpet, and its 7/16 inch height keeps the rise low enough to avoid a trip edge at the doorway. The 4 inch width gives you enough bearing surface to trap the carpet edge on one side and meet the hard flooring on the other.
2) What lengths does the Cal-Royal CR33641 carpet threshold come in?
Four lengths: 36, 48, 72, and 96 inches. For a standard 3-0 single door the 36 inch covers the opening; 72 inch suits a pair of 3-0 doors, and the 96 inch is there for wider storefront or corridor openings or for cutting to length on site.
3) What finishes are available, and will the screws match?
Two finishes, Aluminum and Duro (dark bronze). Fasteners are supplied to suit the finish: MIL finish thresholds ship with zinc plated screws, brass with brass screws, color anodized with screws plated to match, and stainless steel with stainless screws. So a bronze-anodized unit arrives with screws plated to match rather than bright zinc showing on a dark floor line.
4) Is this threshold heavy duty enough for a school or hospital corridor?
It is a commercial-rated, heavy duty threshold intended for high traffic doorways, and Cal-Royal lists it for office buildings, schools, healthcare, retail, industrial and warehouse space, government buildings, and multi-tenant residential. For a property manager standardizing corridors across a portfolio, the same 7/16 by 4 inch profile in two finishes covers most openings.
5) Can I cut the CR33641 down to fit my opening?
Aluminum thresholds of this type are routinely cut to length in the field, and ordering the next length up (48, 72, or 96 inch) gives you material to trim to the exact door width. Keep enough length to land the anchor screws in solid substrate on both sides of the opening.
How fast can I get the Cal-Royal CR3364136-AL 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 CR3364136-AL come with a warranty?
Absolutely. The Cal-Royal CR3364136-AL 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 CR3364136-AL?
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 CR3364136-AL 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.
!