Contractor's Choice Contractor 50 Pack 42 Gallon Black Outdoor Plastic Construction Flap Trash Bag Item #5277762 Model #67103W 0301 This gas shutoff differs from This gas shutoff differs from other contemporary design in that Watts engineers have embodied the time tested Watts auto thermatic thermal actuator principle along with a snap acting trip latch which closes the valve at a definite controlled temperature Color coded for easy identification of hot and cold lines Heavy duty contractor bag made from high quality puncture resistant plastic These strong and durable clean up bags are ideal for your home improvement and construction projects