Number of rungs: 1 x 9, 1 x 10. Closed length: 3.5m. Extended length: 5.95m. Number of bearer bars: 5. Weight: 13kg. Delivered Direct to Business, Site or Home; please note: a carriage surcharge may apply dependent upon the delivery address, contact us for further details. The Zarges Industrial Roof Ladders have strong oval section stiles and 300mm serrated round rungs for better grip. The ladder has a ridge hook to grip the ridge of a pitched roof, and 100mm diameter running wheels for precise positioning. The bearer bars are made from 10mm x 6mm aluminium flat bar with PVC coating for extra strength. These bearer bars hold the ladder off the roof and spread the weight to protect roof tiles from damage.