Wanted whelping box big enough for Cavalier King Charles Spaniel.

I would never borrow or have a second hand whelping box you never know what germs come with it , I have cavaliers and my OH made great boxs from conti board ....if you join us here i can pass on more details :) that also goes for vet bedding and other whelping aids although it may cost you money it's never wise to borrow