https://www.automationdirect.com/adc/shopping/catalog/bulk_wire_-a-_cable/single_conductor_wire_-a-_cable/tffn18wh
TFFN Wire: 18 AWG, 500ft spool (PN# TFFN18WH) | AutomationDirect
TFFN18WH - Atlas Wire TFFN building wire, single conductor, 18 AWG, 16-stranded, bare copper, PVC conductor insulation material, white, nylon jacket,...
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https://www.vanmeterinc.com/catalog/electrical/wire-and-cable/copper-building-wire/tffn-wire?page=3
TFFN Wire | Van Meter Inc.
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