Blind Flange Lockout Device For Maximum Flange Width 3 in For Maximum Nut Diameter 1 3/8 in For Maximum Padlock Shackle Diameter 7/25 in For Maximum Pipe Size 3 in For Minimum Flange Width 1/2 in For Minimum Nut Diameter 1/2 in For Minimum Pipe Size 1/2 in Maximum Number of Padlocks 4 For Use With Pipeline Maintenance Lockout Color Red Lockout Material Aluminum/Steel Maximum Temperature 194 Degrees F Minimum Temperature -40 Degrees F Overall Height 14.6 in Overall Length 14.61 in