Replacement lamp for DeVere 1000W, 1200W, 2.4Kw and 4.8Kw Dichromat, Difcon and Varicontrast lamphouses as fitted to the Model 507, 5108, 515, Vulcan, Apollo, 508H, 515H, Metro and 1010ET enlargers. May also be used in other applications where an ELH lamp is specified.