Call your local glass company.

Look into arena mirrors

Better to approach an agency.

Local glass company will measure one day and install a week later. Easy peasy.

You do not have th have a whole wall mirrored I find the only place I really need the mirror is where I lift wigts and those are free weights where you need to see your form Ther eis no need for one where your cardio stuff is and if you have a multi gym they keep you in the proper form anywhay. As for where to get the mirrors any glass shop can do this but cost is all over the map.

Patricia has a point. It doesn't have to be a huge mirror. You can put a mirror in the area where you do your exercises and lift weights. I hated people working out in front of a mirror until I became one of them. It's easier to do everything in front of a mirror, and you can see your progress. There are other things you can use for good workout progress. I started using peptides, and my workouts are much better now. There are Peptides for Sale always, and it's worth trying them out.

I dream of a home gym. It would be awesome to have one because I wouldn't train all the time.