Product Brochure
34 35
Master Flow
™
 Foundation Vent — Grill Style
n
 Grill style foundation vent in die-cast aluminum
n
 Nail to oor joists or use as block replacement
n
 16" x 8" (406 mm x 203 mm); NFA 50 sq. in. (32,258 mm
2
)
Master Flow
™
 Foundation Vent — Grill Style 
with Lintel
n
 Die-cast aluminum vanes
n
 Includes damper and lintel
n
 Designed for nailing to oor joists or as a foundation block replacement
n
 16" x 8" (406 mm x 203 mm); NFA 50 sq. in. (32,258 mm
2
)
Vent Covers
Master Flow
™
 Foundation Vent Cover
n
 Easy installation
n
 Fits on most 16" x 8" (406 mm x 203 mm) foundation vents
n
 Helps protect against weather, rodent, and insect inltration
Vents
Master Flow
™
 Foundation Vent — Automatic
n
 Automatic operation
n
 Easy, snap-in installation
n
 16" x 8" (406 mm x 203 mm); NFA 57 sq. in. (36,774 mm
2
)
Master Flow
™
 Foundation Vent — Powered
n
 Powered operation
n
 Easy, plug-and-go operation
n
 16" x 8" (406 mm x 203 mm); NFA 57 sq. in. (36,774 mm
2
)
Master Flow
™ 
Foundation Vent — Block Style
n
 Aluminum vanes; lintel not required
n
 For block, brick, or frame construction
n
 Recommended for high-level ventilation
n
 16" x 8" (406 mm x 203 mm); NFA 73 sq. in. (47,097 mm
2
)
Master Flow
™
 Foundation Vent — 
Grate Style
n
 Positive open/close damper action
n
 Lintel for foundation block construction
n
 16" x 8" (406 mm x 203 mm); NFA 28 sq. in. (18,065 mm
2
)
Foundation/crawl space ventilation
Vents & covers
Foundation/Crawl space  ventilation
Foundation/Crawl space  ventilation










