DreamLine Duet 55-59 in. W x 58 in. H Bypass Sliding Tub Door in Brushed Nickel, SHDR-1260588-04 Model Size: 55-59 in. W x 58 in. H; Walk-in Opening: 22 1/2  26 1/2 in.; Hardware Finish: Brushed Nickel Double sliding bypass configuration allows entry to the shower from either side; Specially designed rollers create a smooth, quiet gliding operation Wall profiles allow up to 1/2 in. of adjustment per side for out-of-plumb; Top and bottom guiderails can be trimmed up to 4 in. for width adjustment 5/16 in. (8 mm) thick ANSI certified clear tempered glass; DreamLine exclusive ClearMax protective glass coating Professional installation recommended; Limited Lifetime Manufacturer Warranty