The superatv ones i believe are Aluminum. Read a few reviews and talked to a couple different people and they are prone to rattling. I have the OEM half doors on my max and they are fine. Strap that keeps them from swinging all the way open is garbage but other than that they are good.
I have a brand new Thumper fab level 3 roof I installed on my 22 Defender. We are selling our house and unfortunately losing the oversized door on my shop so I am having to switch to a probox top for clearance purposes. This roof is the Level 3 with 360 degree lighting and a good sounding...