Prevue Pet Products Replacement Platform Shelves & Ramps for 485 Feisty Ferret Cage can be used to add additional levels to increase the living and play area for your ferrets or replace worn platforms and ramps. Replacement set includes 2 platforms and 3 ramps. Each platform measures 19 3/8'' Long and 17 ¾'' Wide. Each ramp measures 15 3/8'' Long and 5 1/8'' Wide. Designed exclusively for Prevue Pet Products 485 Feisty Ferret Home. Not compatible with other cages or models.