Abstract: A pool perimeter assembly includes conduits extending between the sidewalls, wherein the conduits are separated by a common wall between the sidewalls. A grate is positioned on the gutter apparatus to direct fluid flow into at least one of the conduits. The fluid flow may include water or air. A first length of the perimeter assembly includes conduits defining a gutter trough and an extra gutter, and the common wall defines a common opening between the conduits. A second length of the assembly includes two conduits defining a gutter trough conduit and an air evacuator conduit separated by a section of the common wall without the common opening. The evacuator conduit is connected to an air exhaust system to remove water vapor and contaminated air from the area surrounding the pool.

Abstract: A pool perimeter assembly includes conduits extending between the sidewalls, wherein the conduits are separated by a common wall between the sidewalls. A grate is positioned on the gutter apparatus to direct fluid flow into at least one of the conduits. The fluid flow may include water or air. The grate is so dimensioned relative to the gutter apparatus so as to fit within a grate fitting device connected to the gutter assembly. The grate fitting device is a grate angle having at least a riser and a lip. The grate angle may include a welding base used in up-fitting existing pool structures to accommodate new grates.