Thermahood - TH125 Pack of 10no - Airtight Downlight Covers for Over Recessed Lights and Downlights - Aids Energy Efficiency.Thermahood Downlighter Covers are designed to reduce heat loss into the attic and reduce draughts as well Downlight protection for a safer home made from self extinguishing flame retardant material Thermahood will help prevent the formation of condensation in the attic through the heat from the downlighter, spotlight or ceiling light Thermahood products prevent the transfer of sound between floors, Dust in the room and unwelcome spiders and insects