Front grille for their cages.
60x40 :with nest box door 1 door 2 feeding places
80x40 :with 2 nest box doors, 2 doors and 4 feeding stations
100x40 :with 2 nest box doors 2 doors 4 feeding places
120x40 :without nest box doors 3 doors 6 feeding places
60x50 :with nest box door 1 door and 2 feeding places
80x50 :with 2 nest box doors 2 doors 4 feeding places
100x50 :with 2 nest box doors 2 doors 4 feeding places
120x50 : without nest box doors 3 doors 6 feeding places