Suspa C16-20651 C1620651 19" Gas Prop, Quantity (2), Force 39 Lbs Per Prop, Force Per Set 78 Lbs,&nbsp;Camper Rear Window, Tonneau Cover Lift Supports, Window Lift Support, Struts, Made in USA This listing includes 2 Lift Supports for Multi Purpose Applications. Extended Length from Center Mount to Center Mount is 18.70 in. Suspa supports are Made in the USA, install easily in minutes, often times without special tools required. Displayed shipping rate apply to the contiguous 48 States only. Additional surcharge applies to PUERTO RICO, HAWAII, ALASKA & OTHER US TERRITORIES.. Interchangable with the following OEM Numbers: C1620651,C16-20651,SE187P40,SE187P40S10