The North Safety B-Safe universal butterfly valve lockout is an adjustable sliding clamp that covers a range of butterfly valve handle sizes and combines with a padlock (sold separately) to help protect against valve opening during maintenance and repair. Polypropylene is electrically nonconductive, chemical resistant, and functions in temperatures from -50 to 360 degrees F (-46 to 183 degrees C). The locking hole accommodates padlock shackles of up to 0.375"/9.5 mm outside diameter. The lockout measures 2.75 x 4 x 12 inches/70 x 102 x 305 mm (H x W x D). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) This device is part of a lockout/tagout (LOTO) safety procedure required at facilities where energy sources need to be isolated during maintenance and repair. Lockout/tagout (LOTO) safety procedures require that lockout devices meet Occupational Safety and Health Administration (OSHA) 1910.147(c)(5) standards for quality assurance. Lockout/tagout (LOTO) devices use color, warning labels or tags, and sometimes a physical barrier to help prevent machine operation or power activation during maintenance and repair. North by Honeywell manufactures safety and personal protective equipment products. The company, founded in 1973, is headquartered in Cranston, RI.