Replacement bottom plates are available for all of The Blue Rooster chiminea designs. Chiminea bottom plates are cast out of tough cast aluminum alloy or cast iron. All bottom plates for our large chimineas (except the ALCH026 Venetian) are 8 1/2 inches across and bolt up with 3 holes. When placing your order please note in the comment area which model it is for or include inside and outside diameter measurement.