Roof Curbs

Roof Curb for Mounting Curb Mount Flange Vents and Fans
Roof Curb available with matching roof cap

AVP's Roof Curbs are designed to fit a Vent or Fan with a Curb Mount Flange of the same diameter. 

Save time and money with AVP's lightweight, heavy-gauge aluminum roof curbs. It’s true; you don’t have to build your own heavy wooden curbs anymore.

A Roof Curb is a metal frame used as a platform for mounting a roof vent or fan. As a result, this platform will provide additional height allowing for installation in all climate zones. Proper installation ensures that the accessory has a level platform for attachment. They can also work as a hatch allowing for easy access to ductwork, HVAC units or maintenance in the attic below.

AVP's Curb Mounted Flange Vent Lines are ready to install on the appropriately sized roof curbs. This includes Aura Vent with Curb Mount Flange, Intake Pop Vents with Curb Mount Flange and Round Back Vents with Curb Mount Flange. We also manufacture Attic Fans with Curb Mount Flange and Aura Solar Fans with Curb Mount Flange when you need powered vents.

All Roof Curbs are Square

ModelSize
RC-3-H12For a 3" Diameter Vent or Fan5"6"11"12"
RC-4-H12For a 4" Diameter Vent or Fan6"7"12"12"
RC-5-H12For a 5" Diameter Vent or Fan7"8"13"12"
RC-6-H12For a 6" Diameter Vent or Fan9"9"14"12"
RC-7-H12For a 7" Diameter Vent or Fan9"10"15"12"
RC-8-H12For an 8" Diameter Vent or Fan10"11"16"12"
RC-9-H12For a 9" Diameter Vent or Fan11"12"17"12"
RC-10-H12For a 10" Diameter Vent or Fan12"13"18"12"
ModelSize
RC-12-H12For a 12" Diameter Vent or Fan13"15"21"12"
RC-14-H12For a 14" Diameter Vent or Fan15"17"23"12"
RC-16-H12For a 16" Diameter Vent or Fan17"19"25"12"
RC-18-H12For an 18" Diameter Vent or Fan19"21"27"12"
RC-20-H12For a 20" Diameter Vent or Fan21"23"29"12"
RC-24-H12For a 24" Diameter Vent or Fan25"27"33"12"
RC-30-H12For a 30" Diameter Vent or Fan31"33"39"12"
RC-36-H12For a 36" Diameter Vent or Fan37"39"45"12"
RC-42-H12For a 42" Diameter Vent or Fan43"45"51"12"
RC-48-H12For a 48" Diameter Vent or Fan49"51"57"12"

Building heavy wooden curbs can cause damage to the roofing membrane. Instead, eliminate the possibility of damage by buying AVP's prefabricated ones. Typically used for EPDM, PVC and TPO roofs.

The flashing allows for mechanical fasteners to be used so that the curb is securely bonded to the roof. Once placed, it is to be covered with roofing material for a water-tight seal.

AVP offers Curbs in an array of sizes fitting vents of 3 inches to 48 inches. They are also now offered in 6 inches tall. In addition, the curbs can be insulated when needed.

For any questions, please email us at [email protected] or give us a call at 1-800-ROOFVENT.

Copyright Active Ventilation Products, Inc. 2021 - All Rights Reserved
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