Our Popular Napa Series Frameless Sliding Shower Door Kits offer a low-profile header track and glass rollers that are designed and manufactured from heavy-duty durable stainless-steel. Each glass roller requires one 3/4” (19mm) diameter hole for proper mounting. Precision bearings and stainless-steel wheels also offer a quiet glide opening and closing operation. Another nice feature,this system can be installed in a wide range of shower applications from full standing shower enclosures or on top of bathtubs. One standard size fit’s most 180-degree bypass inline applications. Stock Available Size: 73” Wide Kit