Copper Coupling (or coupler) is a very short length of pipe or tube used in piping or plumbing, with a socket at one or both ends that allows two pipes or tubes to be joined together.

STANDARD AIR PURIFIER (30 TYPE)
MC30VVM-A AND MC30VVM-H UP TO 21.5 SQM DUST & ODOR SENSORDust and odours are detected and shown in 3 easy-to-understand colours to indicate the level.CLEAN