Metal-Fab Type B-Vent 10" to 12" Increaser multicolor-led-lighting If the opening is 13¾”

If the opening is 13¾” x 3¼

Designed for flat screen TV's

UL 103HT Flue Material  430 Stainless Steel Casing Material 430 Stainless Steel Clearance 1-1/2" Minimum clearance to combustibles for 6"-8" Inner Diameter 18" Outer Diameter 21" Height 13

15-inch high viewing for impactful room presence

Metal-Fab Type B-Vent 10" to 12" Increaser multicolor-led-lighting If the opening is 13¾”Type B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed