Ferret Nation replacement top pans measure 34 1/2 X 22 1/2 with a cut for the ramp and are 3" tall sides. Choose from a prime galvanized or stainless steel construction. Bass Equipment also offers urine guards that attach to the wire of the cage. These guards fit in behind the pans and extend the sides height another 3.5". This means you have an over side height of 6" to 6.5". These pans will fit models with the dimensions of 36" x 24" or 25".