초록 ▼

A structure for use in conjunction with a recessed fixture is provided which includes a substantially rectangular housing defining a top wall and side walls. Each of the walls has exterior and interior wall surfaces, and at least the interior wall surfaces of the housing are coated with a fire resis

A structure for use in conjunction with a recessed fixture is provided which includes a substantially rectangular housing defining a top wall and side walls. Each of the walls has exterior and interior wall surfaces, and at least the interior wall surfaces of the housing are coated with a fire resistant material. Flanges depend outwardly from bottom edges of side walls of the housing to facilitate mounting of the housing between spaced apart building joists. The housing is coated with the fire resistant material prior to installation.

대표청구항 ▼

[ What is claimed is:] [1.] A method of installing recessed fixtures in a ceiling comprising the steps of:a) forming a metal housing having a top wall and a plurality of sidewalls configured to enclose a recessed fixture, said top and plurality of sidewalls have exterior and interior wall surfaces;b

[ What is claimed is:] [1.] A method of installing recessed fixtures in a ceiling comprising the steps of:a) forming a metal housing having a top wall and a plurality of sidewalls configured to enclose a recessed fixture, said top and plurality of sidewalls have exterior and interior wall surfaces;b) coating the interior wall surfaces of said top wall and plurality of side walls of said metal housing with a fire resistant material selected from a group consisting of cementitious and intumescent coating materials;c) providing a ceiling penetration to accommodate said recessed fixture;d) mounting said metal housing between spaced apart building joists adjacent said ceiling penetration, said step of coating the interior wall surfaces of said housing preceding said step of mounting said metal housing between spaced apart building joists, such that said housing defines a firestop system prior to installation, and once installed, limits the spread of fire, flame or hot gasses through said ceiling penetration; ande) emplacing a recessed fixture within said metal housing.