This compression fit skylight guard screens against damaging falling objects with minimal impact to light coming into the skylight. Screen is galvanized, as is retaining frame that fits onto the skylight framework. This style guard maintains roof's water integrity because it doesn't touch the roof nor penetrate it. Satisfies OSHA 1910.23(a) (4) and 1926.501 (b) (4) regarding fall protection. Guard fits 24" x 24" skylights. Custom sizes available upon request.