SkyGuard is the latest bolt-together, non-penetrating protection for smoke hatches and venting skylights from Garlock Safety Equipment. The free-standing design maintains waterproof integrity. Bases are galvanized for resistance to the elements and provide rail height of 42-inches. Meets OSHA 1910.23(a) (4) and 1926.501 (b) (4). Standard sizes of 48x48, 48x96 and 96x96. Custom sizes also available. Rubber footpads prevent sliding or damage to membranes.