This Standard specifies the safety requirements for barriers for recessed luminaires to provide adequate separation from combustible building elements, insulation, and/or debris to reduce the fire risk to any surrounding material and to ensure no damage to the recessed luminaire.Barriers can be collars, covers or complete enclosures intended to ensure combustible materials do not come in contact with hot surfaces.This Standard specifies requirements for barriers in relation to classification, construction, testing, marking and manufacturer’s instructions.This Standard applies to any barrier intended for application to an existing or new luminaire (see Clause 1.1.3).The recessed luminaire barrier’s effect on building properties such as acoustic characteristics, movement of moisture and thermal ‘R’ rating is excluded from the scope of this Standard.