Fits all #3151-54 Select cages, all #3161-63 Dometop cages & all #3171-73 Royalty cages Prevue Pet Products Stainless Steel Coop Cup 1243 fits all Select series bird cages (#3151-3154), Dometop bird cages (#3161-3163) and Royalty bird cages (#3171-3173).