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Gas strut lift support is suitable for use with the 17in gas strut on the heavy-duty Knaack Tool Job Box Lid from 1989 to 1991.
【How to choose】Get the pound rating or OEM interchange number on your old cylinder, then measure the extended length of your old lift support. Compare the pound force, OE number, and measurement to the our 17in gas strut.
【Product Basic Information】This listing includes 2 gas shock for Multi Purpose. Extended Length 17.20IN. This gas strut for camper shell is EZ to install. Only a flat head screwdriver is required.
【Compatibility】Knaack Storagemaster 89 90 91 Tool Job Box compatible with interchange numbers 977-2PK, 9772PK. We recommend confirming compatibility by comparing the cylinder part numbers of the original gas springs before purchase.