Shake or shingle product used to cap the peak of a roof. The appropriate hip and ridge unit should be selected to match the adjacent shakes or shingles. However, in many areas, a tapersawn hip and ridge unit is used on both shake and shingle applications. Hip and ridge product type selection should be performed in accordance with the aesthetic look desired. The hip & ridge exposure should be equal to or less than the exposure in the field of the roof, and should not exceed the maximum exposure for the specified length and grade. Certi-Ridge® Shake Hip & Ridge Units are pre-manufactured, labor saving caps for hips and ridges. These products are made from the same red cedar resource as Certi-label™ shakes for a high quality, perfect match.