1.3 Pool Plugs Material and design: PVC construction with chillproof properties, crafted to be small and easy to store. The plugs feature good ductility and expansion, allowing them to seal the spout firmly. Key benefits: compact, spacesaving storage; reliable and firm seal on the spout; durable, flexible material suitable for pool use. 2.1 Swimming Pool Filter Plug Compatibility: fits models 28270, 28271, 28272, 28273, 26700, 26702, and any system with 1000 gph or smaller. note: please confirm the size of the item before to ensure proper fit. 3.2 Pool Plugs Fitment: suitable for pools 16' or smaller in diameter. Application: wall plug replacement for ground swimming pools and for pools that do not have plunger valves, enabling replacement within the pumps as needed. 4.4 Pump Strainer Hole Plug Size compatibility: designed for hoses and drains with a diameter of 1.14 inches (2.9 cm). Valves and limitations: not compatible with systems that have plunger valves. Use: provides effective drainage when cleaning the filter or replacing it, helping to manage water flow during maintenance. Applications Routine filter maintenance: use the 4.4 plug to drain lines and simplify cleaning or replacement of the filter. Seasonal storage or transport: the compact 1.3 plug is easy to store and deploy as needed. Small pool setups: the 3.2 plugs are suitable for 16 ft and smaller pools, offering a straightforward wall plug replacement option for pools without plunger valves.