CRL380 Series Hydraulic Patch Fittings are medium duty and for interior use. The Hydraulic Patch Fitting is designed for installation without the need for any other floor or overhead closing devices. No cutting into the floor is required. Maximum door width is 39" (1 m) and maximum weight is 220 lb (100 kg). Fitting can accommodate 3/8" (10 mm) to 1/2" (12 mm) tempered glass. Glass fabrication (cut-out) is required.