The pivot jamb ensures smooth operation makes out-of-square adjustments easy. The unit can be installed for left or right entry and swings out only. The bottom threshold width is 1. 81-in wide and designed to repel water in the shower. The overall unit height is 63. 5-in tall. This door can be applied to fiberglass or tile shower bases. Shower door only - does not include shower walls or base. 0. 188-In thick clear glass provides the polished look to showcase your shower. Walk-through width is approximately 19. 44-in wide.