I can tell this is a Briggs & Stratton knock off. It was bigger than the screw openings for the existing muffler. I made it fit by using several self tapping screws. It does what I wanted it to do, so I'm fairly happy. the price was right!
Part works great for deflecting exhaust flow. Comes with screws for attaching to muffler. I’ve had the part on my zero-turn about a month and it’s working fine so far…