Grille & Filter 4 in.

115 VAC or 230 VAC, 50/60 Hz; 12" lead wires; Exceptionally quiet operation; Versatile mounting and adaptability; Heavy-gauge steel construction; Attractive stainless steel grills; Shipped with air flow to pressurize. Can be user modified to exhaust; Aluminum filter is coated with adhesive baffle surfaces for dust and dirt collection. Can be recoated after cleaning for optimum performance; Drilling template included; Note: One grill and filter are included with each fan package. Normally, an additional exhaust grill and filter are required for each installation and must be ordered separately.

In a typical cooling arrangement, the filtered fan box pulls air into the enclosures and the filter grill is used as an air outlet; The washable aluminum filter grill and the air filter are easily accessible and can be removed for cleaning; The filtered fan boxes are available in either 115 VAC or 230 VAC, 50/60 Hz; Filtered passive ventilation can be provided by an exhaust filter for either convection cooling or in combination with a fan in forced air cooling.