Convection Oven Grilling Rack Alternative

[sas7001]

I did my due diligence and tried to find this answer anywhere, Google, Forums, etc. So I'm hoping for a favor from all my buddies out there. I would like the height and diameter dimensions of the Apollo Half Time convection/Microwave Oven grill rack and metal tray. I'm hoping to use a pizza pan and steaming or cooling rack. Product replacement parts are few and far between. Thanks for your help