U-988A: USA
2 1/4" X 2 1/4" (57mm X 57mm)
No markings
Picture courtesy Elton Gish
U number assignment by Elton Gish
Return to the National Insulator US Unipart page
2 1/4" X 2 1/4" (57mm X 57mm)
Return to the National Insulator US Unipart page