Ammonia & Nitrite Remover Sponge 10.3" x 6.3" NH3 NO2 for Aquarium Fish Tank Ammonia & Nitrite Remover Sponge x 1 PAD (26.2 x 16cm ) This product is 100% brand new without retail packaging. Measures approximately: 26.2cm L x 16cm W x 1cm H