Z-brick Zc015205 Carton of 20 Red Classic Brick Facing Carton Of 20 Red Classic Brick Facing Americana 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 Coverage Per Carton Is 3.5 SQFT Depending On Width Of Mortar Line