For work never performed, I recommend ABC Glass & Mirror (703/257-7150, email@example.com). They came to my home to measure for a sliding shower door and provide free estimate, but realized that a shower door would leave only 27” of left & right maneuver space while showering. Their recommendation which I gladly accepted was to stick with a shower curtain. Ordinarily, they would have installed the door and left me to live with the outcome, but I applaud their honesty and therefore recommend them to you. They also do custom mirrors, windows, patio glass replacement and more.