Cal-Royal CR3700 Saddle Thresh...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$28.22
Cal-Royal CR3700 Saddle Threshold Series with 3-Hr Positive Pressure Fire Rating

Cal-Royal CR3700 Saddle Threshold Series with 3-Hr Positive Pressure Fire Rating

(No reviews yet) Write a Review

Model: CR370436-ALUM
$28.22
Selected Finish is

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

$28.22
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 CR3700 Saddle Threshold Series with 3-Hr Positive Pressure Fire Rating

The Cal-Royal CR3700 Saddle Threshold Series delivers heavy-duty, handicap accessible, barrier-free performance over carpet installations, making it a trusted choice for commercial door openings. Engineered with a 3-Hr Positive Pressure rating, this threshold series meets UL 10B, UL 10C, and UBC 7-2 (1997) requirements for demanding life-safety applications. Available in Aluminum and Dark Bronze finishes, the CR3700 Series combines durable construction with code-compliant design for reliable, long-term door threshold performance in high-traffic commercial environments.

Key Features

  • Fire Rating: 3-Hr Positive Pressure rating supports use in fire-rated door assemblies requiring stringent life-safety performance.
  • Heavy-Duty Construction: Built for commercial-grade durability, ensuring long-term reliability under frequent foot and equipment traffic.
  • ADA Accessibility: Handicap accessible and barrier-free design over carpet supports smooth, compliant transitions for all users.
  • Finish Options: Available in Aluminum and Dark Bronze finishes to complement a variety of commercial door and frame aesthetics.
  • Fastener Compatibility: Supplied with #10 x 1-1/2" wood screws; MIL finish thresholds include zinc plated screws, brass thresholds include brass screws, color anodized thresholds include screws plated to match, and stainless steel thresholds include stainless steel screws.
  • Non-Slip Option: Available with Sure Step Non-Slip Abrasive Coating for enhanced traction and slip resistance at the threshold transition.
  • Code Compliance: Meets UL 10B, UL 10C, and UBC 7-2 (1997) standards for fire and building code requirements in commercial installations.

Certifications & Compliance

  • UL 10B Listed
  • UL 10C Listed
  • UBC 7-2 (1997) Compliant
  • 3-Hr Positive Pressure Fire Rating
  • ADA / Handicap Accessible, Barrier Free over Carpet

Technical Specifications

  • Product Group: Door Trim and Accessories
  • Series: CR 3700 Series
  • Product Subgroup: Door Thresholds
  • Product Type: Thresholds - Saddle
  • 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 CR3700?

Cal-Royal CR3700 Series thresholds deliver professional-grade reliability with heavy-duty construction rated for 3-Hr Positive Pressure fire performance and full UL 10B, UL 10C, and UBC 7-2 (1997) compliance. Engineered for demanding commercial applications where code compliance, accessibility, and dependable long-term performance are essential.

Product Specs

Product Group:
Door Trim and Accessories
Series:
CR 3700 Series
Product Subgroup:
Door Thresholds
Product Type:
Thresholds - Saddle
Subcategory:
Thresholds
Commercial/Residential:
Commercial
Product Category:
Door Trim and Accessories
Department:
Door Hardware

Cal-Royal CR370436-ALUM – Frequently Asked Questions

1) What is an alternative to the Cal-Royal CR3726 6 inch saddle threshold?
The Pemko 272 Series flat saddle threshold is the closest direct swap, also a heavy-duty aluminum flat saddle at 1/4 inch by 6 inches and ADA compliant, so it drops into the same sill condition with the same height. If you need to go wider than the CR3700's 7 inch maximum, the NGP 1013 saddle is 1/4 inch by 10 inches in mill aluminum and covers a deeper sill. Where the Cal-Royal separates itself is the stated 3-Hr Positive Pressure rating with UL 10B, UL 10C, and UBC 7-2 (1997) compliance, so on a fire rated opening with a spec callout the CR3700 is the one to hold.
2) For a fire-rated opening, can I use a Pemko 272 or NGP 1013 in place of the Cal-Royal CR3700?
Specify the CR3700 where the assembly is fire rated. The Cal-Royal CR3700 Series carries a 3-Hr Positive Pressure rating and meets UL 10B, UL 10C, and UBC 7-2 (1997). The Pemko 272 Series is described as an ADA compliant flat saddle in heavy-duty aluminum and the NGP 1013 as a BHMA certified mill aluminum saddle - both are matched on profile, not on the fire assembly requirement. On a rated door in a healthcare, education, or government facility, the CR3700 is the one written to that requirement.
3) Do Cal-Royal CR3700 thresholds come with screws, or do I need to buy anchors separately?
Fasteners are supplied. The CR3700 ships with #10 x 1-1/2 inch wood screws. Cal-Royal matches the screw to the threshold finish: mill finish gets zinc plated screws, brass gets brass screws, color anodized gets screws plated to match, and stainless gets stainless screws. Note those are wood screws, so if you are anchoring into a concrete or masonry sill you will need to supply your own sleeve anchors or Tapcons plus a masonry bit.
4) What finishes does the Cal-Royal CR3700 threshold come in, and will Duronodic match my dark bronze frames?
Two finishes: Aluminum and Duronodic, the latter being the dark bronze anodized tone. Both are available in all four widths and all four lengths, so a property manager standardizing a building can run the same finish across every opening regardless of frame depth. Duronodic is the one to specify against dark bronze storefront and dark bronze hollow metal; mill Aluminum is the usual pick under painted or clear anodized frames.
5) Should I use a flat saddle threshold or an offset threshold at my door?
A saddle like the CR3700 is flat top to bottom and sits on a level sill, which is what you want for an interior opening, a carpet-to-hard-surface transition, or any accessible route where a raised leg would be a trip hazard. An offset threshold, such as the NGP 653 Offset Threshold at 1/2 inch by 5-1/2 inch, has a step in the profile and is meant for an exterior opening where the interior floor sits higher than the exterior sill and you need the change in elevation handled at the door. If your floor is level through the opening, the flat saddle is the right shape.
6) Is there a non-slip version of the Cal-Royal CR3700 threshold for a wet entry?
Yes. The CR3700 can be ordered with Sure Step Non-Slip Abrasive Coating, which adds traction across the walking surface. That is the option to specify at a building entrance, a locker room or kitchen door, a healthcare corridor, or any opening where the floor gets wet and a smooth aluminum saddle would get slick underfoot.
7) My spec calls for a BHMA certified threshold. What matches that?
The NGP 1013 saddle threshold is BHMA certified, at 1/4 inch by 10 inch in mill aluminum. It is a flat saddle at the same 1/4 inch rise used across the Cal-Royal CR3700 profiles, so a submittal calling out BHMA certification is answered by the NGP 1013 while keeping the same barrier-free transition height.
8) The sill has a height difference to make up at the door. Is a saddle threshold the right choice?
A flat saddle such as the Cal-Royal CR3700 profiles or the Pemko 272 Series sits at a 1/4 inch rise and carries the transition straight across, which is the barrier-free arrangement. Where the sill steps and the threshold has to bridge two levels, the offset profile is the one built for it - the NGP 653 is an offset threshold at 1/2 inch by 5-1/2 inch in aluminum alloy. Confirm the sill condition before ordering, because the two profiles are not interchangeable in the same opening.
9) Can I cut a Cal-Royal CR3700 threshold down to fit a non-standard opening?
Aluminum saddles in this series are supplied in 36, 48, 72, and 96 inch stock lengths, and the usual practice is to buy the next length up and cut to the frame throat on site with a miter saw and a non-ferrous blade. Order the 48 inch for a single door that measures under 4 feet, the 96 inch when you need a continuous run across a wide pair or a storefront opening. Keep in mind the screw holes are pre-located, so plan your cut so you retain anchor points at both ends.
10) Will the Cal-Royal CR3700 hold up in a high traffic commercial entry with carts and equipment?
It is built as a heavy-duty commercial saddle, rated for frequent foot and equipment traffic, and Cal-Royal lists it for office buildings, schools, hospitals, retail, warehouses, multi-tenant residential, and government facilities. For a facility running pallet jacks, carts, or gurneys across the opening, the wider 6 inch CR3726 or 7 inch CR3767 spreads the load and the fastener pattern over more of the sill than the 4 inch does.
11) Does a Pemko 272 threshold work over carpet the way the Cal-Royal CR3700 does?
The Cal-Royal CR3700 Series is specified as handicap accessible and barrier free over carpet, and is also offered with a Sure Step Non-Slip Abrasive Coating for traction at the transition. The Pemko 272 Series is an ADA compliant flat saddle in heavy-duty aluminum at the same 1/4 inch rise, so the geometry over the floor covering is comparable, but the over-carpet application and the abrasive coating option are called out on the CR3700.
12) I want a dark bronze threshold. Do the alternatives come in a matching finish?
The Cal-Royal CR3700 Series is offered in Aluminum and Duronodic across all four profiles and every length, so a dark anodized face is available in 4, 5, 6 and 7 inch widths. The NGP 1013 is a mill aluminum saddle. Where the opening is being matched to dark hardware or a bronze frame, the Duronodic CR3700 is the profile that carries that finish through the series.
How fast can I get the Cal-Royal CR370436-ALUM 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 CR370436-ALUM come with a warranty?
Absolutely. The Cal-Royal CR370436-ALUM 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 CR370436-ALUM?
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 CR370436-ALUM 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.
!