When ordering MVX-TCB roofs, you must specify which MVB/MVX modules the roofs are intended for, i.e. MVB AC or MVB(L) EC fans, MVX-PF-G4/M5/F7 filter modules, MVX -BC/BE/BF/DX battery modules, etc.
Example of a 2-module roof (size 4 and product held in stock):
MVX-2TCB 4 + MVBL EC 4 + MVX-PF4-F7
Example of a 3-module roof (size 9 and product not held in stock):
MVX-3TCB9-M (fitted) + MVBL EC 9 + MVX-PF9-F7