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