The Tetra Whisper Quiet In Tank Aquarium Water Filter is a large 170 GPH canister filter designed for tanks with a capacity of 20-40 gallons. With its quiet operation and internal filter location, it provides efficient and effective filtration for all water types. The filter is designed by the trusted brand Tetra and comes with a max head height of 40 inches, making it a reliable and suitable choice for maintaining clean and healthy water in your aquarium. Shipping: Free Standard Shipping. Returns: We accept returns within 30 days of delivery. Items must be returned in their original condition