Provide KEES Model KG exhaust only moisture (or heat only) hood(s) constructed of 18 gauge type 304 (type 430 – use only for heat applications; not recommended for moisture applications) stainless steel with #3 polish (or .063" mill finish aluminum) of sizes as indicated. All exterior seams shall be continuously welded, liquid tight, and ground and polished to match the original finish of the material. Moisture hood(s) shall include a full perimeter condensate gutter with welded drain fitting. Heat only wall (or island) hood(s) shall have offset hemmed front (or front and rear) edge(s) for stiffness. Hood(s) shall be National Sanitation Foundation (NSF) Listed and bear the NSF seal. For more details, refer to KEES catalog KFG.