6" -3 turn. 240V, 1250 watts. Also fits: Gemline #SU301, Supco/Chromalox #SP12MA, Zoppas #TS3D6212.
Cross Reference
403774 404101 ERS36D12 S36D12 SP12MA SU301 TS3D6212
Cross Reference
403774 404101 ERS36D12 S36D12 SP12MA SU301 TS3D6212