Bratt's timber ladders are manufactured from Douglas fir for the stiles and American Ash is used for the rungs; which are glued and pinned into blind holes at 250mm centres. All British standard ladders over 3.63M closed have automatic latching. It is recommended that two section ladders over 4.75M closed length and three section ladders over 3.00M closed length should be rope operated. All with varnished finish and all metal fittings are rust proofed.