20" 200Lbs/889N Lift Support Struts Gas Spring Shocks Hydraulics Piston Lid Stay Window Cabinet Support Prop for Heavy Duty Rv Murphy Bed Truck Trailer Cap Tonneau Cover Floor Hatch Trap Door

Features

• ★Must-Read Parameter★-- 20Inch 200lb Gas Spring Struts Extended size 19.7 inch (500mm), Compressed size 11.8 inch (300mm); NOTE: If the lid weight is less than 160lbs or more than 220 pounds, please choose other pressure struts!!!
• ★Application Range★-- VERY STRONG, Please make sure to measure your lid weight before purchasing! 200lb Per strut,two are 400lb.Suitable for lids or doors weighing between 200lbs and 250lbs, the struts could only be compressed after installing!
• ★Where you use them?★-- SUPER STRONG GAS SHOCKS, could be used on HEAVY DUTY King/Queen/Murphy Bed, trailer cap, tonneau cover, sled trailer,large heavy-duty floor hatch door, trap door! If your lid weight is less than 160 pounds, we have 20 inch struts of weaker pressure 80lb/100lb/120lb/150lb/180lb for your choice;
• ★About Installation★-- Open the door or window to your desired location. Take about 20% of the door length as the upper mounting point of the support rod; Fix the lower mounting point, and the installation can be completed within five minutes.
• ★Why Choose Us?★-- If you have any questions or dissatisfaction or need to install/use guide, welcome to contact us by email or click "Ask the seller".