4 ft. high catwalk includes 8 ft. ramp and 6 ft. ladder set at roughly 27 degrees. 6 ft. high catwalk includes 10ft. ramp and 8 ft. ladder. Easy and fast setup with side ramp and ladder attached to top section with gate hinges and rod on each side. All 3 sections are 24" wide. Side ramp has slats 12" apart. Suggestion: For stronger stability we recommend staking your K9 equipment, like a dog tie-out stake or secure sandbags with bungee cords.