Keep your pond water at its cleanest using the Atlantic Filterfalls Replacement Mat. This mat fits inside the Atlantic Filterfalls with 20.5" Spillway, 20 Gallons, below the bag filled with biological media. The mat features a permeable design, allowing water to pass through but trapping any solid debris. Place this mat under the biological media bag in the filter container to provide clean, nourishing water to your pond and keep it fresh all season long.

Note: Actual color of the mat may vary than that shown.

Dimensions: 20.75"L x 19.75"W x 1.625"D
Construction: fibrous filter media