The Glasfloss Z-Line 1000 Series air filter shall be of the extended surface pleated type. The media utilized shall be a micro fiberglass blend. The media shall be pleated in a tapered radial configuration. An expanded metal reinforcement shall be applied to the air leaving and air entry side of the media to maintain continuity of the radial pleats. The expanded metal shall be galvanized to resist rust and corrosion. A heavy-duty aluminized steel shall be utilized as an encasing frame. No glue shall be used in this product. Maximum operating temperature up to 300 degrees Fahrenheit. All Glasfloss Z-Line 1000 Series filters shall be U.L. classified.