LAMP HOLDER, CERAMIC SINGLE, W/ 28" WIRE LEADS;HATCO;WARMER GRCW-1, DRAWING #'S HS1-1186, HS2-188, HS2-270,;HS2-503. SERIES: FS, FST, GR, GRA, GRACL, GRAH, GRAL, GRBW,;GRH, GRHD, GRHW, GRSDH, GRSDS.;SERIES: FDW(D), LW-2;MERCO BW-(24, 36, 48, 60, 72), BWI-(24, 36, 48, 60, 72)