Diamond Hearths Radiant Traditional Edge 48" x 18" Type I Standard Board New York Brick Brick Ember ProtectionWhat's Included Type I Hearth Pad Traditional or Sapphire Ember Protection R value of 0 Specifications Item Number DH NY18X48 Brand Name Diamond Hearths Collection Radiant Finish New York Brick Edge Type Traditional Shape Standard Board R Value 0. 84 Thickness 1. 25" Style Traditional Product Category Heater Board Primary Material Brick Width 48" Depth 18" Warranty Limited Lifetime Warranty