The tubing 50 is provided with downwardly directed apertures 51 at intervals along its length to obtain the spray 52 into the corner at which {HEAD ~ the walls} and {TAIL ~ the floor} meet 
The tubing 50 is provided with downwardly directed apertures 51 at intervals along its length to obtain the spray 52 into the corner at which { HEAD ~ the walls } and { TAIL ~ the floor } meet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH