About Master Flow™ Power Attic Vents - Roof Mount with Thermostat - ERV4, ERV5 and ERV6

  • Exhausts large amounts of heat and moisture from the attic
  • High-efficiency PSC motor design
  • Compact size and hemmed dome for a sleek finished look
  • Adjustable thermostat included on all models. Optional humidistat/thermostat available.
  • Passes the 110 mph wind-driven rain test per TAS 100(A)1
  • Popular colors to complement your finished roof (see chart below)
  • Eligible for coverage under GAF enhanced warranties when installed by a contractor certified by GAF in connection with a qualifying roofing system 2
  • Factory-tested prior to shipment
  • Includes extra-rigid brackets and a heavy-duty insect screen

This product can be used to comply with certain FORTIFIED Roof™ requirements. Visit gaf.com/fortified and current FORTIFIED Home™ Standard available at fortifiedhome.org for details. Applicable in the U.S. only.


1 Under controlled laboratory testing.

2 See GAF System Plus, Silver Pledge, and Golden Pledge Limited Warranties for complete coverage and restrictions. When not eligible for coverage under GAF enhanced warranties, see Master Flow Ventilation Products Limited Warranty, Master Flow Powered Ventilation Products Limited Warranty or Master Flow Wifi Attic Vent Limited Warranty (depending on product) for complete coverage and restrictions.

Features & Benefits

Eligible accessory product in the Attic Ventilation Category of GAF Residential Enhanced and WindProven™ Limited Warranties*

*15-year WindProven™ Limited Wind Warranty covers GAF Shingles with LayerLock® Technology only and requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products. For installations not eligible for the WindProven Limited Wind Warranty, see GAF Shingleand Accessory Limited Warranty, Master Flow™Ventilation Products Limited Warranty,or Master Flow™ Powered Ventilation Products Limited Warranty (depending on product) for complete coverage and restrictions.

Earn GAF Rewards when you buy GAF Master Flow™ ventilation products

Master Flow™ ventilation products are eligible for GAF Rewards points. Visit GAF Rewards for a complete list of qualifying products.

Product Documentation