【Perfect Compatibility】The A20015 Ribbed Hosing is perfectly compatible with Fluval canister filters models 307/407 (A446, A449), 306/406 (A212, A217), 305/405 (A211, A216)canister filter, and more. 【High-quality Materials】This tubular replacement is made of high-quality plastic, which has super corrosion resistance and impact resistance, can resist the erosion of complex water bodies in the fish tank, can resist extreme temperatures, and is not easy to age, become brittle or damaged. The ribbed design on the surface prevents the hose from getting knotted during use, and it can be flexibly placed and not easy to deform, greatly extending the service life. 【Improve filtration efficiency】 This A20015 is replacement for Fluval Tank Filter Threaded tubing, compatible with the Fluval filtration system, with good sealing and smooth water flow, ensuring the stable operation of the filter without leakage, and greatly improving the filtration efficiency, and protecting the high-quality water quality of the aquarium for a long time, just to create a cleaner and more comfortable living environment. 【Easy to Install】Remove the old hose first, the new hose is equipped with easy-to-install connectors at both ends, and align the connectors at both ends to the interfaces in the compatible instrument, and the installation can be completed quickly. 【Product Service】We provide you with 24-hour professional service, if you have any model compatibility problems or installation problems, please feel free to contact us.