RKI Upper Side Truck Tool Box White Aluminum Model US72AW Spark a Midship Extension Kit is

a Midship Extension Kit is required (part no

LUVERNE O-Mega II 125-Inch Silver Aluminum Wheel to Wheel Side Steps

and the doors also have a MicroSeal stripping

F-550 Super Duty Regular Cab Model 489921-579921

75 Brand WEATHER GUARD US Color White Install Time (hours) 0

RKI Upper Side Truck Tool Box White Aluminum Model US72AW Spark a Midship Extension Kit isRKI Upper Side Truck Tool Box White Aluminum Model US72AW Box is constructed of . 080 bright diamond treadplate aluminum Welds are full arc welds, no spot welds Doors are constructed of . 080 bright diamond treadplate aluminum with an inner stiffener of . 090 smooth aluminum Each door is attached to the hull of the box with 3 stainless steel pillow block type hinges with self lubricating bushings and full length 5 16" stainless steel hinge pins Hinges