Z-Brick Facing Brick, Inca Used. 3-1/2 Sq. Ft. 20/Box Carton Of 20 Used Brick Facing Inca Decorative Brick Can Be Used On Interior &amp; Exterior Surfaces Easy To Cut Color Runs Through The Entire Brick Carries A UL Class 1 Fire Rating When Applied With Z Ment Mortar Adhesive