Werner; Combination Step/extension Ladder; Series 7800, Type Iaa, Duty Rating; Ladder Height: 7 Ft; Base Size: 24-1/4 In X 14-1/2 In Parallel Section Outside Rails; Material: Fiberglass; Load Capacity: 375 Lb; Spread Size: 53-1/2 In X 14-1/2 In Flared Section Outside Rails At Top 7-7/8 In Deep; Rail: 3-1/8 In Flared Section Wide X 3-1/8 In Parallel Section Wide; Flange: 1-3/16 In Flared Section Wide X 1-3/16 In Parallel Section Wide; Maximum Working Length: 11-1/2 ft