Hydrel’s patent pending door design utilizes proven Knife-Edge technology to ensure a watertight seal. Captive door screws maintain aesthetic integrity and are designed to allow for positive sealing without the ability to damage the grommet through over-tightening. By incorporating a custom molded lens design, the Paradox™ Architectural In-grade provides maximum aperture opening while maintaining a minimal footprint. For added safety, Hydrel offers an optional anti-slip lens (pictured left).