The damper employs a folded curtain style blade for point-of-origin control of radiant heat in a ventilation system. SMT-CRD installs in the ceiling membrane for floor/ceiling or roof/ceiling assemblies with a re resistance rating up to and including 3 hours.
<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->Features
- Delta BreezSmart SMT-CRD - Ceiling Radiation Damper helps to limit the radiant heat transfer through an air inlet/outlet opening in the ceiling membrane.
- SMT-CRD Ceiling Radiation Damper is UL and cUL listed, and exceeds UL 555C for use in 3-hour fire rated assemblies.
- Warnock-Hersey certified for use in fire resistance rated floor/ceiling or roof/ceiling assemblies. Warnock Hersey listing #: 102195501SAT-002
- CSFM listing: 3226-0368:104
- UL 555C listing: R27832
- Meets NFPA Standards: 90A and 101
- Meets Building Code Standards: IBC, NBC, NFPA, SBC, and UBC
- Installation is valid for the following UL rated wood truss ceilings: L521, L546, L558, L562, L574, L576, L581, L583, L585, P522, P533, P538 and P545.
- Intended for installation with the following UL Listed Delta Electronic Fan Models SMT130, SMT130M, SMT130H, SMT150, SMT150D, and SMT150LED (For combustible and non-combustible installation), SLM80, SLM100, SLM80-110-C, SLM80-110LED-C, SLM80-110D-C, SLM80-110DLED-C, SLM80-110H-C SLM50-110-C and SLM50-110LED-C (For non-combustible installation only).
Manufacturer Resources
Product Specs
- Category:
- Ventilation Fans
- Duct Diameter:
- 4"
- Height:
- 3-7/8"
- Width:
- 11"
- Depth:
- 11-7/8"
- Energy Star:
- Yes
- Warranty:
- 3 Year Limited
- Subcategory:
- BreezSmart
- Product Group:
- Washroom/Bath
- Product Subgroup:
- Ventilation Accessories
- Collection:
- BreezSmart
- Product Type:
- Damper
Delta Breez SMT-CRD – Frequently Asked Questions
How fast can I get the Delta Breez SMT-CRD 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 Delta Breez SMT-CRD come with a warranty?
Absolutely. The Delta Breez SMT-CRD 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 Delta Breez SMT-CRD?
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 Delta Breez SMT-CRD 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.