What is an Unblockable Drain?
The term unblockable drain means a drain of any size and shape that a human body cannot sufficiently block to create a suction entrapment hazard. Aquastar Pool Products manufactures a popular brand referred to as a “Channel Drain”. (CPSC Staff Interpretation: An unblockable drain, to be consistent with the test procedures found in ASME/ANSI A112.19.8, would have minimum dimensions of 18″ x 23″, which represent the shoulder to waist measurements of the 99th percentile adult male).
