Norwesco Septic Tank Manhole Extension 15 in. H x 20 in. D

Norwesco's manhole extensions make it easy to bring septic tank access points up to ground level for quick, hassle-free maintenance. Available in 6 in. 15 in. and 24 in. heights, these rugged extensions are designed to fit securely to Norwesco septic tank lids and maintain a watertight seal. See chart for fit.

• Designed to fit securely on Norwesco Septic Tanks
• Watertight connection prevents surface water intrusion
• Polyethylene construction resists corrosion and cracking