Perforated return / exhaust grilles shall be model 3P by Anemostat. Provide sizes and mounting types as scheduled. For surface mounting applications, countersunk mounting holes shall be provided in the border, with oval head screws also provided by the grille manufacturer. The perforated face pattern shall be 3/16" diameter holes on 1/4" centers with a 51% free area.  Grilles shall be constructed from steel, extruded aluminum, or 304 stainless steel as scheduled.  

Anemostat perforated filter grille models 3P-81 (for 1" filters) or 3P-82 (for 2" filters) shall be installed as scheduled, and shall include a “continuous-hinged” type face, with 1/4 turn fastener(s).  Filters shall be provided by __________ as specified.  Provide sizes and mounting types as scheduled. For surface mounting applications, countersunk mounting holes shall be provided in the border, with oval head screws also provided by the grille manufacturer.  The perforated face pattern shall be 3/16" diameter holes on 1/4" centers with a 51% free area.  Grilles shall be constructed from steel, extruded aluminum, or 304 stainless steel as scheduled.

Where scheduled, registers shall include a factory attached, opposed blade volume control damper constructed from the materials scheduled.

Provide a baked-on, arctic white finish, or match color as selected by the architect.