P1070-44 Size: 4" x 4" Features: -Coupling for corrugated pipe. -Lightweight, flexible, heavy-duty PVC connectors fit tight. -For use with heat pumps only. -Designed to connect modern drainage and irrigation systems to PVC pipes quickly and easily. -Used for corrugated polyethylene drainage tubing. -Mercury free thermostat. -Ideal for use in storm and sub-soil drainage systems, farm irrigation systems, golf course drainage, residential areas, anywhere corrugated polyethylene drainage and irrigation systems are connected to S and D or DWV plastic pipe. Specifications: -Size 3" x 3": 3.96" H x 4.08" W x 4.08" D. -Size 4" x 4": 3.94" H x 5.02" W x 5.02" D.