Designed for any wall mounted tile installation where tiling begins above the floor, primarily for shower walls. Reusable, interlocking sections with level vials are used in a series to form a continuous angle support shelf to rest tiles. Kit includes: (4) 13-15/16" L x 1-1/4" W x 2" H yellow plastic flexible sections that conform to curves, inside, and outside corners; (4) 26-7/8" L x 1-1/4" W x 2" H red plastic rigid sections for straight walls; carrying case; and installation pamphlet. No. SLK-0404: Pieces In Kit: 10 pieces, Pkg Qty: 1, Package Type: Clamshell