The 2004 Olympic skimmer box is no longer being manufactured, it is recommended you purchase the 2005 Widemouth skimmer box as it fits the same opening in the pool wall as the 2004 Olympic skimmer. See link below.

https://www.abovegroundpoolsuperstore.com.au/skimmer-boxes-jets/455-zodiac-widemouth-2005-skimmer-box.html