MF9 Connecting Clips come in boxes of 200 clips. The MF9 Ceiling Connecting Metal Furring clip is used to connect the MF5 Ceiling Section (Top Hat) and MF7 Primary Support Channel as part of metal framing (MF) systems. suspended ceiling system are ideal for commercial and domestic applications where ceiling height may be varied to suit requirements. Concealed grid suspended ceiling systems are suitable for most internal dry lining applications and are ideal where services need to be accommodated and when upgrading and protecting existing structures.