EXTECH’s 4,000G Unit Glass Skylight is capable of being installed on a flat roof. The secret is in the low-profile (silicone-sealed) perimeter, which allows water to freely run off. Super-strong curb design allows for large skylights up to 32 square feet. Additional benefits include aluminum flange to protect glass edge, foam cushions to provide thermal isolation, strategically placed weep holes and weep slot aligning with weep holes. Silicone structural bead/isolator and silicone waterproofing bead ensure a leak-tight seal. For more information, visit www.extechinc.com.