Requires no digging or cutting of floor. Quick and easy installation with just 4 screws. Suitable door weight: Max. 220lb Suitable door width: Max. 39" Suitable door thickness: 5/16" to 1/2" glass Maximum opening 150° and controlled 135° Durability-500,000 cycles (Tested) Ambient temperature: -4°F to +123°F No Hold Open: OptionalSS 316 cover plate secure with pin system ...