The premium grade of shingles for roofs, gable ends and sidewalls. These top-grade shingles are 100% heartwood, 100% clear and 100% edge grain. Available in 406mm or 457mm or 610mm lengths. Cedar shakes and shingles manufactured by members of the Cedar Shake & Shingle Bureau (”CSSB”) are the only products labelled with the ”Certi” brand name. Certi-label cedar shakes and shingles are made by experienced craftsmen who take pride in their trade and the quality of their product.