Aston 40" x 40" x 77.5" Semi-Frameless Bypass Round Sliding Shower Door Enclosure with Base, Polished Chrome Premium 5mm Tempered Safety Glass - ANSI Z97.1 Certified Secured Roller System Full-Length Magnetized Door Channels for Secured Closure Reversible for Left and Right Handed Door Installation Includes Matching 2.5" Low-Profile Acrylic Fiberglass Base