Product details:

PIG Rapid Response DrainBlocker Drain Cover is specially designed to work in emergency spill applications. Mount on a wall (bracket sold separately) or store in a spill kit. Polypropylene top layer prevents drain cover from stretching or tearing when you pick it up. Super-sealing urethane bottom layer creates a tight seal on drain openings. Cover resists chemicals, oils, and detergents to help meet regulations. Packaged in an easy-open, high-visibility storage tube so workers can find it fast and get to the spill quickly. Storage tube is for indoor use only.