Two gas props connect an inside surface of the door to {HEAD ~ the opposing sides} of {TAIL ~ the rear opening} 
Two gas props connect an inside surface of the door to { HEAD ~ the opposing sides } of { TAIL ~ the rear opening }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL