Check the listing for details. Tempo Basin Adapter. Condition: New. Listed at 13.78 USD. This 3" & 4" Basin Adapter is manufactured from High Impact Polystyrene (HIPS). The Basin Adapter may be attached to the 9", 12", and 18" Square Catch Basin,or the 9" and 12" Low Profile Basin to connect to 3" & 4" Sewer & Drain Pipe, 3" & 4" Corrugated Pipe and 3" & 4" Triple Wall Pipe. The Basin Adapter is easily installed or removed by rotating clockwise or counter-clockwise respectively.Features:Manufactured from High Impact Polystyrene (HIPS)UV stabilized to protect from sun degradationFits openings on the 9", 12" and 18" Square Catch BasinsFits opening on the 9" and 12" Low Profile BasinsUse to connect the basin to 3" and 4" Sewer & Drain Pipe, 3" and 4" Corrugated Pipe and 3" and 4" Triple Wall PipeEasily installed or removed by rotating clockwise or counter-clockwise respectivelyMade in the USA