Ikea Billy CatBlock

Do you have a billy cabinet? Do you have valuables stored inside. And do you, by any chance have a vicious little furball trying to get there and ruin your worldly belongings? This is the solution then! Very simple door blockade that will keep your cabinets secure from our little murderous furballs.Technicalities: It is a very simple model with negative cylinders added. Ikea stuff have very large variations between each model, I have 3 billy cabines and distance between cylidners varied up to 0.