Click to expand Tap to zoom NDS 6 Inch Universal Adapter Plug by NDS Save $ -4.89 $ 4.89 SKU 1206 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart For use with the 9, 12, 18, and 24 Inch Catch Basin Series. Use with 24 Inch Catch Basin also requires #2410 adapter.