Masonite's 6 Lite Internal Grille, Low-E glass units are made with tempered glass, dual-sealed, and coated in a Low-E, energy-saving finish. Our high-quality steel entry door is sure to suit your design and performance requirements. The high-definition panel profile provides excellent shadow lines, creating outstanding panel definition. For added value this door is insulated with a polyurethane core, providing an energy efficient entry system recognized by ENERGY STAR. This unit comes double bored making it ready to accept a lock set and deadbolt and has been factory primed, ready to install.