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Black steel roof cap with damper, bird screen, flexible foil ducting, connectors and zip ties

Broan-NuTone, LLC

Broan-NuTone, LLC RVK1A trap

SKU CH-0BMT-J2AC6 MPN RVK1A

Roof vent kit with back-draft damper, bird screen, 8 ft UL 181 Class 1 foil duct and adapter for bathroom exhaust fans

  • Product typeDrain Components
  • Sold asEach
  • Built-in back-draft damper and bird screen protect the duct
  • UL 181 Class 1 flexible foil ducting ensures compliant airflow
  • 4 in metal connector and 3 in to 4 in adapter simplify installation
  • Two nylon zip ties and clamps secure every joint
  • Black steel roof cap withstands outdoor exposure

Roof Vent Kit for Broan Fans

This kit provides a complete roof termination for Broan ventilation fans. It includes a black steel roof cap with a built-in backdraft damper and bird screen. The package also supplies an 8-foot length of 4-inch flexible foil ducting. Installation is simplified with the included metal duct connector, clamps, and a 3-inch to 4-inch reducer.

UL 181 Class 1 Ducting Compliance

The supplied 8-foot flexible foil duct conforms to UL 181 Class 1 Air Connector requirements. This rating confirms the ducting meets specific safety standards for air connector use. Using compliant ducting helps maintain the intended airflow performance of the ventilation system. The specification is the primary indicator that the kit suits code-conscious installations.

Bath Exhaust Installers Avoiding Dryer Use

This kit suits homeowners or contractors terminating a bath exhaust fan through the roof. The included backdraft damper and bird screen protect the duct opening from outdoor elements. Do not use this product for dryer venting, as it is not designed for that application. Buyers needing a wall termination or a dryer-specific vent kit should look at other options.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 63% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameBroan
Model nameRVK1A
Product typeDrain Components
Size & build
Shipping weight0.73 kg
Package size356 × 254 × 229 mm

Questions about this item

What does the UL 181 Class 1 rating mean for the foil ducting in a real installation?

The flexible foil duct meets UL 181 Class 1 Air Connector requirements, meaning it is tested for flame spread and smoke development and approved for use as an air connector in residential ventilation systems.

How does the 4-inch duct connector interface with the roof cap and the fan?

The kit includes a 4-inch metal duct connector that attaches to the roof cap, a 3-inch to 4-inch adapter for fans with smaller outlets, and two nylon zip ties to secure the flexible foil duct to both ends.

What roof opening and clearance does the black steel cap need to fit and mount?

The black steel roof cap with built-in back-draft damper and bird screen is designed for a 4-inch duct penetration; the flexible foil duct and included hardware accommodate standard roof vent installations for bath exhaust fans.

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