{HEAD ~ An assembly} 15 wherein a pullout force of {TAIL ~ at least 25 pounds} is required to pull the heater out of the housing 
{ HEAD ~ An assembly } 15 wherein a pullout force of { TAIL ~ at least 25 pounds } is required to pull the heater out of the housing
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH