Specialty Recreation K1422ELP Low Profile Single Pane Exterior Skylight Kit Speciality Recreation Skylight Kit, Low Profile Skylights are made of high performance thermoformed polycarbonate to be long lasting and easy to clean When choosing a Skylight, measure your rough hole opening as well as the overall exterior size There is a size to replace most manufacturer's original equipment Includes: one Skylight, one Inner Garnish and one Sealant. Low Profile Rectangular Skylight Kit, Cracked Ice color Hole size 14 inch x 22 inch; flange size 17.5 inch x 25.5 inch; roof thickness 1.5 inch or more