*Made with 18 guage 100% 304 steel
*Set screws are 2" long and adjust to fit the different variations in flue sizes
*Fits any outside tile dimensions between 7" x 20" to 9" x 22"
*Base is designed to fit square, round, rectangular or oval flue tiles
*Screen is 8" high and has a 3/4" mesh screen
*Made in the USA and carries a lifetime warranty