Four grades drive specification
There are four UK classifications for load carrying capability: Light Grade, Medium Grade, Heavy Grade and Extra Heavy Grade.
The Light, Medium, Heavy and Extra Heavy grades ALL have a three times safety factor. Testing and certification for compliance with one of the four standards MUST be carried out by an independent testing station with NAMAS accreditation.
In addition to the certification of manufacturing standards, PSA MOB PF2 PS also requires that the installation methodology is clearly defined and verified.