Perfect Shower Curbs with Kirb-Perfect Designed to be used with a pan liner, it can be used with or without a 2x4 wood curb. It features molded-in dovetail connecting lugs and can be used for multiple-length installations. Features Build a perfect shower curb every time with the Kirb-Perfect Use with or without a 2 x 4 wood curb on any size shower The top has a built-in pitch into the shower Preserves the integrity of the liner Easily cut with a hacksaw, PVC cutters, or grinder Economical, lightweight non-rotting plastic Provides a cement backing for ceramic, porcelain, or stone It is simple to add lightweight mud to both sides of the pan material Works great with the Quick Pitch System What's Included? 2 side panels - 5-1/2" H x 30" L 1 top panel - 4-1/2" W 2"x 30" L Stainless Steel Self-Tapping Screws Illustrated Installation Instructions