TECH 111 Universal All Purpose AP8 Round 2-1/2″ Tire Patch Repair Unit - Tire Supply Network
Box Mounting Bracket For Standard Device Rings - 2-1/2" Through 6" Farside Standoff | Southwire
2 Gang Box 32mm Universal KO - Marshall-Tufflex
Pen+Gear Universal Moving Box with Cushioning, Fits TVs up to 65", 2 Count - Walmart.com
Bluave M10s22 10" M Series High Power 600w Marine Subwoofer 2-ohm With 10" Universal Marine Sub Box Enclosure For Cars, Trucks, Powersports, Utvs, ... : Target
4” flat round open junction box universal mounting bracket with ears 2-3/4” O.C. 4R000S