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A bimetal coil automatically opens and closes the ventilation louvers as temperature changes
The clips are easy-to-remove without tools
Seals out drafts
Review all instructions and (Material) Safety Data Sheet before use
clearance above concrete
Ply Gem 6-3/4" x 6-3/4" White Vinyl Mounting Blocks Unbranded A bimetal coil automatically opensThe 1 piece design can be used after siding installation to mount all types of accessories. Compatible with Double 4" or Double 5" siding profiles. Manufactured with ultraviolet stabilized color, minimizing the effects of exposure to the elements. Rich textured appearance. Surface dimensions: 6 3 4" x 6 3 4". Projection: 3 4". Knockouts: Round 1" diameter; rectangle 2 3 8" x 3 3 4". Limited lifetime warranty.
