Use keywords to find the product you are looking for or use: Advanced Search      CAMPER CARE  CAMPER EXTERIOR  CANVAS INTERIOR  CANVAS REPLACEMENT  LIFT SYSTEMS   Product HEAVY DUTY SPRING - FOLD-A-WALL ONLY [PA-VANGU0480] Item #:   PA-VANGU0480 ITEM PRICE:  $40.00 ITEM DESCRIPTION These heavy duty springs are found on Fold-A-Wall pop up campers. Palomino contructed a number of these units (commonly called MXL or TXL) however other manufacturers used the system as well.