HECASA Attic Ladder Spreader Hinge Arms Kit for Werner 55-1 2006 and Older Pair Counter Balance Arms - Walmart.com
GRONGU 56-1 Attic Ladder Spring Replacement Kit Compatible with Werner Access Ladders Model W2200, W2500, WH2200, WH2500 Only - 1 Pair - Amazon.com
Century Aluminum Folding Attic Ladder 7.67-ft to 10.25-ft (Rough Opening: 22.5-in x 54-in) with 375-lb Capacity in the Attic Ladders department at Lowes.com