Catch Basin Combo 4" x 3" Outlet 3"/4" - UL043

The Catch Basin Combo 4" x 3" Outlet 3"/4" - UL043 from NDS delivers a fast, universal connection for your catch basins. This locking outlet adapter fits a wide range of catch basin sizes (9", 12", and 24" as well as compatible low-profile drains) and connects to 3" and 4" pipes, including drainage PVC, single-wall corrugated, triple-wall, and DWV/Sch. 40 configurations. Made of UV-inhibited high-impact polystyrene, it stands up to weather and sun exposure while remaining simple to install.

Benefits

• Quick, secure installation with locking flex tabs—no special tools required.
• Universal compatibility across 9", 12", 18", and 24" catch basins and related low-profile adapters.
• Versatile pipe connections to 3" and 4" outlets, spanning common drainage materials.
• Durable construction from UV-treated high-impact polystyrene designed for outdoor use.
• Leak-resistant design reduces the risk of overflow and costly water damage.
• Lightweight and easy to handle for both DIY projects and professional installs.

Key features

• Locking Outlet Adapter with locking flex tabs for a secure, weather-tight connection.
• Universal fit for 9", 12", 18", and 24" catch basins and low-profile adapters.
• 3" and 4" outlet options compatible with a wide range of pipes.
• Compatible with PVC, single-wall corrugated, triple-wall, and DWV/Sch 40 piping.
• Made of high-impact polystyrene (HIPS) with UV inhibitors for outdoor durability.
• Lightweight, rugged design that installs quickly and reliably.
• NDS branding and the MFG number 1243 ensure official compatibility with UL043.