Sioux Chief’s tile-in drain head for its 821 Series shower pan drains installs just like a standard drain head with a strainer. It is a two-piece, stainless-steel head that threads into the clamping collar of the 821 shower pan drain. No special tools or techniques are needed. The removable tile insert “tray” sets inside the outer/lower drain head and provides a square drainage slot between the two pieces. A piece of shower floor tile is set into the tray to provide a seamless look to the shower floor. Sioux Chief.