Goof Proof Standard Liner/Drain Shower Floor Kit Standard Shower Kit (SSK-501D ULTRA) "Goof Proof Shower" contents: 1 x Pre-Pitch Kit STD-201, 2 x Kirb-Perfect KP-543 1 x SPL/40/6 Pan Liner (6 x 5'), 1 x Shower Drain/Square 1 x Quick Pitch QPK-101, 1 x Installation DVD, 1 x Positive Weep Protector (Larger Pan Liner and extensions are also available)