Mason-Lite B-Vent 12" Storm Collar sqft1240 Optional concrete top pieces

Optional concrete top pieces

Surly sturdy enough material leaves you no worry about using reliability

Gnarled driftwood

The heating area varies according to the heater's length

Adjustable heat output from 120 000 to 150 000 meeting your different needs

Mason-Lite B-Vent 12" Storm Collar sqft1240 Optional concrete top piecesB Vent is a GAS ONLY metal chimney with smaller diameters. For those fireplaces requiring complicated chimney runs, B Vent may be just the answer. What's Included Storm Collar Features Used above the Flashing to provide weather strip seal to pipe. Seal the inner edge with sealant against pipe Specifications Item Number Mason Lite 12BVSC Product Type Storm Collar Venting Type B Vent Size (Diameter) 12" Dimensions Size 10" (I. D.) A 11" (O. D.) B 16 1