ComplianceSigns Vertical Plastic ANSI DANGER Oxygen In Use No Smoking No Open Flames Sign, 10 X 7 in. with English Text and Symbol, White Plastic oxygen in use sign with symbol makes your medical facility message clear Printed on 10 x 7 in. semi-rigid, 1mm PVC plastic with clear protective laminate Rounded corners have 0.20-in. mounting holes for easy installation Colors conform to ANSI Z535.1 standards for Safety Color Code Resists UV, chemicals, abrasion and moisture for long life. US-made. Ships fast from our Illinois plant