About Master Flow™ Roof Louver SSB960 Metal Slant‑Back

  • Allows heat and moisture to escape the attic on roofs with limited ridge line or when replacing existing roof louvers.
  • Slant-back design offers strong protection against weather infiltration, especially on steep-slope applications.
  • Available with an optional internal Weather & Ember-Resistant Screen1 (select models)
  • Model with internal screen meets the prescriptive requirements of Chapter 7A- Materials and Construction Methods for Exterior Wildfire Exposure of the California Building Code, 2022 edition.1
  • Available in aluminum or galvanized construction
  • 60 sq. in. of NFA per vent (38,710 sq mm) helps provide 20% more venting capacity (vs. typical 50 sq. in. NFA vents [32,258 sq. mm])
  • Passes the 110 mph wind-driven rain test per TAS 100(A)2
  • 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 3

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 Always check with the authority having jurisdiction for approval before use.

2 Under controlled laboratory testing.

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


*Compared to typical 50 sq. in. (32,258 mm2) NFA roof vents.

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.

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.

Product Documentation