Lowe's Shower and Tub Door Install. Find shower and tub doors, shower units and handheld showerheads for your home at Lowe's. Use a Lowe's professional installer to ensure a smooth install for your next shower project.owe's Shower and Tub Door Install. Find shower and tub doors, shower units and handheld showerheads for your home at Lowe's. Use a Lowe's professional installer to ensure a smooth install for your next shower project.