ITEM: Caution Hard Hat Required Beyond This Point, 14 Long x 20 Wide, Aluminum Safety Sign NMC. MANUFACTURER: NMC. BRAND: NMC. MANUFACTURER PART: C667AC. Caution Hard Hat Required Beyond This Point, 14 Long x 20 Wide, Aluminum Safety Sign Rectangle, 0.04 Thick, Use for Accident Prevention (MOQ1, Pkg Qty1)CATEGORIES: Maintenance, Repair and Operational (MRO) Supplies. Signs, Identification & Lockout/Tagout. Safety Signs. N/A. TOTAL RECYCLED CONTENT: 10.00%. POSTCONSUMER RECYCLED CONTENT: 1.00%. KEYWORDS: NMCSigns, Identification & Lockout/TagoutSignsSafety SignsN/A.