O 2-4 U

O 2-4 U is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Oxygen Equipment
• Oxygen Commercial & Industrial

North American Industry Classification System (NAICS) Categories:

• Industrial Machinery And Equipment Merchant Wholesalers > Oxygen Commercial & Industrial
• All Other Health And Personal Care Stores > Medical & Hospital Electronic & Monitoring Devices > Oxygen Equipment & Supplies

Standard Industry Classification (SIC) Categories:

• Medical & Hospital Equipment > Medical & Hospital Electronic & Monitoring Devices > Oxygen Equipment
• Industrial Supplies > Industrial Supplies, Nec > Oxygen Commercial & Industrial