Manhole Chamber Access Ladders Manufactured to BS 4211
65x10mm stringers
380mm inside stringer size
20mm diameter rungs at 300mm centres maximum
Top rung 75mm from top of stringer
150mm long fixing brackets (back of stringer to wall face)
Fixing brackets / feet at a maximum 2250mm spacing
All fixing brackets/feet manufactured from specified stringer material
Fixing brackets/feet drilled M14 for 12mm fixings
Galvanised to BSEN ISO 1461 as standard