Epoxy Coated Manhole Step Lineup ML-10-TDS tread width10 3/4″273 mmprojection5 3/4″146 mmleg centers10″254 mminstallationmechanical lock SPI -10 tread width10 3/4″273 mmprojection5 3/4″146 mmleg centers10″254 mminstallationpush in PI-10 tread width10 3/4″273 mmprojection5 3/4″146 mmleg centers10″254 mminstallationpush in MSN -10 tread width10 3/4″273 mmprojection5 1/2″140 mmleg centers10″254 mminstallationmasonry I-11 tread width11″279 mmprojection5 3/4″146 mmleg centers11″279 mminstallationA Lok-Fex Lok insert ML-11 tread width11″279 mmprojection5 3/4″146 mmleg centers11″279 mminstallationmechanical lock LML-11 tread width11″279 mmprojection5 3/4″146 mmleg centers11″279 mminstallationmechanical lock ML-13 tread width13 3/4″349 mmprojection6″152 mmleg centers13″330 mminstallationmechanical lock SML-13 tread width13 3/4″349 mmprojection5 1/8″130 mmleg centers13″330 mminstallationmechanical lock I-13 tread width13 3/4″349 mmprojection6″152 mmleg centers13″330 mminstallationA Lok-Fex Lok insert LML-13 tread width13 3/4″349 mmprojection5 1/8″130 mmleg centers13″330 mminstallationmechanical lock MSN-13 tread width13 3/4″349 mmprojection5 1/8″130 mmleg centers13″330 mminstallationmasonry MSN-13-HG tread width13 3/4″349 mmprojection4″102 mmleg centers13″330 mminstallationmasonry