18" x 18" Copper Chimney Cap - CPSB18x18

*Removable lid size is 23" x 23" and is made from strong 24 gauge 100% copper
*Outside base size is ACTUALLY 19" X 19" and is made with 16 guage copper
*Set screws are 2" long and adjust to fit the different variations in flue sizes
*Fits any outside tile dimensions between 16" x 16" to 19" x 19"
*Screen is 8" high and has a 3/4" mesh screen
*Made by Copperfield in the USA and carries a lifetime warranty