Hook: Floor Medium Narrow (Blue Rectangle)The Canister of Isotope-9 decoration fits into a narrow blue medium rectangle floor hook.
Hook: Floor Medium (Blue Square)The Canister of Isotope-9 decoration fits into a blue medium square floor hook.
How to Get a Canister of Isotope-9 Decoration
Operation decorations have a chance from dropping from a certain operation. Some drop from the random mobs, while others drop from the bosses. A 16-man will drop more decorations that an 8-man, and the harder the mode of the operation the better chance of a decoration dropping.
The Canister of Isotope-9 decoration is dropped from the Toborro's Courtyard Operation.