17 Gas Props for Camper Shell/Truck Cap Rear Door - Measurement Required! (ATC, Snugtop, Leer)

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• CHECK LENGTHS AND PRESSURE BEFORE ORDERING. THESE DO NOT FIT ALL CANOPY and COVERS! THE MEASUREMENTS ARE FROM CENTER OF BALL MOUNT TO CENTER OF BALL MOUNT, NOT FROM END TO END OF STRUT! SEE PICTURE! Use a measuring tape to measure the door gas strut that you are replacing. Measure from the CENTER of the gas prop head (little plastic end), to the other side. DO NOT measure from the end of the gas prop, your measurement will be too long. Note that most applications allow for 1-5% size variation.
• Truck Upfitters Pair of 45 pound (each) gas struts. 17.1" extended length and 9.9" compressed length. This size of door shock absorber is for tall medium weight rear or side camper shell doors. Each canopy shock has 45 lbs of pressure, for a total of 90 lbs of pressure. Please note that this does not mean that these gas lift shocks can lift something that is 90 lbs. the typical hinged-style door weight for this prop is approx 60-80 lbs, including the weight of the camper shell locks & keys.
• These gas lift cylinders do not fit all camper shell brands / models. Measure your strut from center of socket to center of socket when fully opened & fully closed to get accurate measurement. Please see pictures to determine how to measure. Do NOT measure from end to end. Measurement must be from the center of plastic ball mount on each end of the gas spring lift. Measurement is important to ensure they open properly and get a good camper shell seal against the camper shell gasket when closed.
• Comes with four 10mm ball mounts for alternate 'other than truck camper shell' applications, such as in camper / canopy windoors, RV doors and awnings, boat hatch spring lifts, gas struts for cabinets, storage bed lifts, toolbox struts, etc. These gas shock lift supports CANNOT be compressed by hand. These gas props MUST be installed in the EXTENDED / OPEN position. It is nearly impossible to install them in the CLOSED position. Please refer to the install video for guidance on how to install.
• Equivalent to Suspa # C16-04270 or Stabilus # 1822. These camper shell shocks are compatible with many truck canopy types, including LEER truck cap parts, ARE truck topper parts, Glasstite parts, Century parts, Snugtop replacement parts Astro tops, ATC campers, and many other fiberglass brands that utilize gas shocks / gas springs / gas lift cylinders. Compatible with many gas lift brands, including stabilus, lift o mat, and Suspa. These are OEM quality and perfect fit for your topper!