Amazon Basics 4-Shelf Adjustable Heavy Duty Steel Wire Rack Storage Shelving, Sturdy Garage Shelving, 350 lbs Capacity Per Shelf, Easy No-Tool Assembly, 36" x 14" x 54", Black

This isn't a direct answer to your question but a lot of cheaper wire shelves are equally capable. You can stack a few of the cheapo Amazon Basics ones together with the dimensions and weight rating you need and it should be fine. I've got a garage and basement full of these https://www.amazon.com/dp/B01LYBQXRH