Velux ECL 1446 0000C 1430/1446 Low-Profile Shingle Roof Flashing with Adhesive Underlayment for Curb Mount Skylight is made for asphalt shingles or wood shakes (up to 1/2 in. thickness) low-profile roofing materials. This Curb-Mount step flashing kit works with standard site-built curbs. It does not matter if they are slightly out-of-square or pre-existing. In combination with the new Velux No Leak FCM/VCM/VCE skylight, ECL flashing ensures 3rd layer of water protection. Velux ECL 1446 0000C has