Philips door wall sliding screen

I just moved into this house. All the windows are Phillips but I cannot find a name on the door wall itself but believe it is probably a Phillips also. The bottom track that the wheels ride on is broken iand half of it is missing. I need to replace that part and I also need to know is there a track that the wheels on the top of the door ride on also because at the top there is no track at all. I would also like to replace the four wheels on each corner with the mechanism that in the door if possible.