Steves & Sons 31 3 4 in. x 79 in. Reliant Series Mini Blind White Primed Clear Glass Half Lite Fiberglass Back Door Slab Concrete Roof Tile it's a testament to the Item Weight:17.637 it's a testament to the art of purposeful design Hydro Crunch 315 Watt CMH Lamp Specification: Initial lumens at rated watts after 100 hours of operation is 33000 Lumens ) 79 to 79 7 8 Glass Layout 1 2 Lite Glass Style Clear Glass Glass Shape Rectangle Lite Door Glass Insulation Low E Number of Lites 1 Lite Bore Type No Bore Panel Type No Panel Included No Additional Items Included Features No Additional Features Energy Star Qualified North Central it is a slab with no bore