The Premium Masonry "Outdoor" Firebox includes real firebrick lining for utmost beauty and durability. A choice of stacked or herringbone brick patterns in either ivory or warm red brick colors. Tested and listed to ANSI standards, the Premium Firebox comes in 36", 42" & 50" sizes. With a 30" opening and clean face design, this Premium Masonry Firebox is specially designed with stainless steel for outdoor applications. Also includes a gas line knock-out for installing gas logs or log lighter.