{TAIL ~ The space} provided between brush members 4 a and 4 b allows a mounting strip to be included in {HEAD ~ the housing} 
{ TAIL ~ The space } provided between brush members 4 a and 4 b allows a mounting strip to be included in { HEAD ~ the housing }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD