Many years ago, purchased a gazebo from Canadian Tire, love the gazebo but from day one the zippers on the walls were just too small for the actual purpose that they were to be used, so after one year or so, one by one the zippers failed.  Cost of identical replacements were over $200, and you still get the same lousy walls, so why would you.  Looking for alternatives, found this one from Wayfair, that just fits right, took measurements to ensure proper height and it will fit, so ordered and installed and is as though they were made for the gazebo, fit like a glove.