20" x 25". Re-use 10 to 20 times...shake, air blow or wash clean. Free air flow prevents exhaust fan from drawing a vacuum. No support grids or brackets needed-2" thick. Dissolves in thinner. Contains no CFC's...environmentally safe.

• 20" x 25".
• No support grids or brackets needed-2" thick.
• Dissolves in thinner.

20" x 25".Air Filtration Co., Inc.