nVent Schroff, AMC RIO AIR BLOCK FS DOUBLE, MTCA.4 RTM Filler Module With Air Baffle, Full-Size Double, MicroTCA filler modules fill unused slots in MTCA.1 and MTCA.4 Systems., In accordance with MicroTCA.1 and MicroTCA.4 specifications, To cover unused slots within a MicroTCA.1 or MicroTCA.4 System, Flanges with captive M3 screws for fixing to the card cage, EMC shielded