C-1632 Hearth plate w/curb SiC (1 piece) 15-5/8" wide

15-5/8" wide.  Check your furnace dimension and make sure you order the correct hearth plate.  If your furnace is wide enough you may want  item 26511H which is 16" wide.  There is some variability on the width of the furnace chamber.

Bonded silicon carbide one piece hearth plate with curb on sides and rear.

Dimensions 31.5"(800mm) long x 15-5/8" wide(397mm)  
Overall height: 2"(51mm).  Curb width: 1.25"(32mm)
Floor thickness: 0.75"(19mm)