Knowles Gas

Knowles Gas is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Gas Fitters
• Sheet Metal Equipment & Supplies

North American Industry Classification System (NAICS) Categories:

• Metal Service Centers And Other Metal Merchant Wholesalers > Sheet Metal Products
• Other Building Material Dealers > Heating Equipment (Including Hydronic) > Gas Fitters

Standard Industry Classification (SIC) Categories:

• Metals Service Centers & Offices > Sheet Metal Products
• Plumbing And Heating Equipment And Supplies (Hydronics) > Hydronic Heating Equipment > Gas Fitters