These trays fit all of our 4 inch and 2 > inch Quick-Clean feeders, Ingenious design allows tray to stay attached to Quick-Clean Feeders when base is removed, Keeping feeders clean has never been easier! They are made of durable polycarbonate with a lifetime guarantee, Generous 12 inch diameter provides lots of extra perching space and catches seed that would otherwise be wasted, SKU: GC7278