High-quality Foam Filters for Air Conditioning Units and Window Wall Air Conditioning Units. Soft Foam Filters PAFL02 Price: $2.98 Kwik Kut, foam, 15" x 24" x 1/4" Quantity: - + ADD TO ORDER Hard Back Filters PAFL01 Price: $8.58 Kwik Kut, foam, 15" x 24" x 1/4" Quantit...