SAC's Non-penetrating roof mount modular tray will fit most and eventually all SAC patio mounts. Mounts it currently fits are as follows:
AE3904 - 2' x 2inch Satellite Patio Mount
AE3906 - 2' x 3inch Satellite Patio Mount
AE3912 - 2' x 1 1/4' Satellite Patio Mount
AE3913 - 3' x 1 1/4' Satellite Patio Mount
It is possible to connect as many trays together as required to get a multi mount installation(as shown in image) or for heavy duty installations. Just simply bolt the trays together.
One tray mounting is only recommended for small dishes.