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ARANA 20\" 150lb gas strut shocks are widely used on heavy duty bench box lid boat hatch or floor hatch cover truck Camper RV bed Murphy Bed AD board or home-build window etc. as long as the lid weight is between 130-165 pounds; do measure the lid weight before purchasing measuring method: use a pole and scale to weigh at the position where you will mount gas struts usually at the position 20%-30% from the hinge.