b'S B S M O D I F I E D I R S H I N G L E S*U.S. only*StainGuard algae protection is available only on shingles sold in packages bearing theStainGuard logo. Products with StainGuard algae protection are covered by a 10-year limited warranty against blue-green algae discoloration. See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.S B S M O D I F I E D I R S H I N G L E Ss s m i r s b O d i i e d h i n g l e f s*U.S. only*StainGuard algae protection is available only on shingles sold in packages bearing theStainGuard logo. Products with StainGuard algae protection are covered by a 10-year limited warranty against blue-green algae discoloration. See GAF Shingle & Accessory Ltd. Warranty for complete coverage and restrictions.Note: It is difficult to reproduce the color clarity and actual color blends of these products. Before selecting your color, please ask to see several full-size shingles.32'