Majestic B Vent 7" 8" Attic Insulation Shield btu20500 Model Name Series Opti myst® Model # h10.38 Model Name Series Opti myst® Model # FG1000 Product Title Dimplex Pro Box Front Glass Pane for Dimplex Model CDFI BX1000 Product Height (in) 14 375" Door opening – dimension (Height) 8 3 4" Door opening dimension (Width) 17 1 4'' Firebox – dimension (Height) 11 7 8" Firebox – dimension (Width) 19 5 8" Firebox – dimension (Depth) 13 1 2" Firebox lined with refractory bricks for better heat distribution Yes Stainless steel secondary air system improving gas combustion Yes Adjustable threaded legs Yes Steel thickness – body 3 16" Steel thickness – top 5 16" Fireplace opening – minimum (Height) 21 1 2" Fireplace opening – minimum (Width) 27 1 2" Fireplace opening – minimum (Depth) 12 7 8" USA standard (emissions) EPA Canadian Standard (emissions) CSA B415 Model DV 7BVIS Product Type Attic Insulation Shield Venting Type B Vent Size 7" 8" ØA 10 3⁄4" B 10 5⁄16" C 13" Technical Dimensions The BV line of Duravent round vent pipe and fittings is designed for use on approved gas appliances in residential and light commercial and industrial applications