I chose French door shower doors. Love them, as they open into the shower or out into the room. Cut for tub or shower,

Upper West Side Triplex · More Info

Local glass shop can order it.

<div><a href='https://www.houzz.com/products/dreamline-enigma-x-68-72w-x-76h-sliding-shower-door-brushed-steel-prvw-vr~67733931' target='_blank'><img src='https://st.hzcdn.com/simgs/41d146fa09601b53_8-8812/contemporary-shower-doors.jpg' alt='Enigma-x68 to 72&quot;x76&quot; Sliding Shower Door, Brushed Stainless Steel' border=0 width='500' height='500' nopin='nopin' ondragstart='return false;' onselectstart='return false;' oncontextmenu='return false;'/></a></div><div style='color:#444;'><small><a style="text-decoration:none;color:#444;" href="https://www.houzz.com/products/shower-doors-prbr0-br~t_15159"; target="_blank">Buy shower doors on Houzz</a></small></div>

Most shower glass is custom sized by local glass companies. Start there.

Or Google "72 inch sliding shower doors"...many vendors.