This listing is the  Certikin HD105 skimmer basket 

Diameter of base 129mm approx

Diameter of top  203mm approx

Height 160 mm approx

I have over 35 Full Certikin HD100 Kits that comprise of the the body, lid, basket and weir I am selling the components separately  as the whole unit is to difficult to post due to size  hence the parts are available.  See separate listings for the other components.   If you wan the full HD100 this is available for collection.