Metal Fab Sure Seal Direct Vent 5" x 420" Stainless Steel Chimney Liner Flex Kit economy ) 1 2" Overall Dimensions Width Type:Firestop Vent Sleeve Assembly ) 1 2" Overall Dimensions Width 16" Depth 6" Height 66" Height with Optional Blower Kit 72" Shipping Weight The generously appointed window of glass offers a full view of rich flames over stacked logs across the backdrop of lustrous enamel interior panels The special double wall construction of Metal Fab Direct Vent allows direct vent stoves and fireplaces to operate without using air from inside the building under normal residential use against defects in material or workmanship of the product for parts only for as long as the original consumer owns the venting system