DreamLine Unidoor Lux 54 in. W x 72 in. H Fully Frameless Hinged Shower Door with Support Arm in Brushed Nickel, SHDR-23547210-04 Model Size: 54 in. W x 72 in. H; Walk-in Opening: 23 in.; Configuration includes a Shower Door and Inline Panel Premium 3/8 in. (10mm) thick ANSI certified tempered glass with a frameless glass design for an upscale, open look and feel to your shower space DreamLine exclusive ClearMax water repellant and stain resistant coating; Hardware Finish: Brushed Nickel Inline panel is attached to the wall by solid brass brackets; Support Arm required for stability; Reversible for a right or left door opening IMPORTANT! All measurements should be taken against FINISHED walls; Wall studs or other reinforcement required; Professional installation recommended