Halo H7ICT Recessed Housing, 5-1/2 in Ceiling Opening, Recessed Mounting, Aluminum | The H7 recessed housing is the standard in the industry for both commercial and residential applications. The wide variety of trims available allows a number of different lighting effects to be created with one basic housing. H7ICT is for installations where the housing will be in direct contact with insulation. H7ICT may be converted into AIR-TITE installation when used with AIR-TITE trim.