VELUX ECL 2246 0000C Skylight Flashing, 2222/2230/2234/2246 Low-Profile Shingle Roof Flashing w/Adhesive Underlayment for Curb Mount Skylights Velux ECL 2246 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. It is used for FCM/VCM/VCE 2222, 2230, 2234, 2246 models. 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