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The ADVANCED DRAINAGE SYSTEMS 4P2610-12FIT is a 4-inch OneFit Inserta Tee designed for use in drainage and stormwater management systems. This fitting allows a 4-inch lateral connection to be made into an existing mainline pipe ranging from 10 to 12 inches in diameter. The Inserta Tee design eliminates the need to cut and splice the mainline, allowing a direct insertion installation. It is suited for residential, commercial, and municipal drainage applications and is typically installed by plumbers, drainage contractors, and civil site crews.
This fitting is used where a new 4-inch branch line must tap into a larger existing mainline without full pipe replacement or extensive excavation. Common applications include yard drainage tie-ins, catch basin connections, and stormwater lateral installations. The 10 to 12 inch host pipe compatibility makes it practical for larger diameter corrugated and similar drainage mainlines in below-grade installations.
Designed as an OEM-style replacement and new-installation fitting for 10 to 12 inch diameter mainline drainage pipe with a 4-inch lateral branch outlet.
Installation is typically performed by licensed plumbers or drainage contractors. Before installation, relieve any active flow and confirm the host pipe diameter falls within the 10 to 12 inch compatibility range. Follow local plumbing and site drainage codes, and ensure the insertion depth and seating of the tee are fully engaged before backfilling. Do not over-drive or force the fitting beyond the designed seating point.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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