Before purchasing Kargo Glide you must determine the correct Length. Measure the length of your pickup box and choose the Kargo Glide size that is just short of your measurement. Example: Your truck's pickup box measures 77” in length, the Kargo Glide model that measures the closest is 75”x 23” or Model # 7523. Model 6023 60” Length x 23” Wide x 3" Height Weight: 42 lbs. $200 plus FREE Shipping Model 6523 65” Length x 23” Wide x 3" Height Weight: 45 lbs. $200 plus FREE Shipping Model 7023 70” Length x 23” Wide x 3" Height Weight: 48 lbs. $200 plus FREE Shipping Model 7523 75” Length x 23” Wide x 3" Height Weight: 51 lbs. $200 plus FREE Shipping WARRANTY: 30 day customer satisfaction guarantee and 180 day manufacturer's warranty on materials and workmanship. Proudly Made in the USA!