If you currently have the Triple Step, SolidStep Manual Fold-Down Steps for 25" to 28-7/8" RV Door Frames, # LC791572 and prefer a quad step, I suggest part number # LC791574. This is the same SolidStep for 25" to 28-7/8" RV door frames but in a quad configuration and will mount exactly the same your current install. view full answer...