Product HighlightsThis High Performance B-Vent cap protects around Metal-Fab Type B chimney system from rain and debris as well as helps prevent backdrafts. It features the same Surelock® B-Vent locking system which makes it easy to install.
California residents: see Proposition 65 Warning
Weight 0.80 Pounds Length 17.50 Inches Width 17.50 Inches Height 24.00 Inches Country of Origin USA Brand Metal-Fab Diameter 4" Composition Outer wall is constructed of galvanized steel .018" thinck G90 Steel for sizes 3" to 14" diameter and .024" think G90 for sizes 16" to 30" diameter. The inner wall is constructed of aluminum alloy .012" think for sizes 3" to 8" diameter and .018" thick f For Use With Metal-Fab B-Vent Products Gauge Outer Wall - 26ga, Inner Wall - 30ga Inside Diameter 4" Size 4" UL Listed Yes
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