I have had this grate for 5 years in a 30" fireplace. This is the one I got after trying 3 others, all of which had large openings between the steel grate members. These others did not do well keeping the burning embers in place, due to the 4" or so gaps between the steel supports, So, the burning wood fell through the spaces onto the bottom of the firebox. BUT, this Saf-T-Grate has very small openings (holes and slots) in a nearly solid curved cast iron bed, which contains all of the burning wood and embers, which keeps the fire going to the very last ember. Nothing falls through the grate, and the design allows for correct breathing of the fire. I recently replaced the 30" wide fireplace with a new 42" wide x 30" high model, with a new stone hearth and rock-faced wall from hearth to 10' ceiling. I added another 8" wide center section to the original 22" wide grate, to now be a 29" wide grate. This fits the new 42" wide fireplace perfectly.