Trimaco Butyl II Two Layer Poly-Back Canvas Drop Cloth, 12-feet x 15-feet Dimensions: 12' x 15' Leak-resistant poly backing Thick, absorbent 7 oz canvas Drapes well over furniture Two layer poly-back canvas drop cloth It has a leak-proof poly backing which prevents paint from leaking through It keeps paint from tracking Measures 180-Inch length by 144-Inch width Comes in 7-ounce weight; includes 4 drop clothes per pack