Cavity dia. 0.500 in., temp. Range 50.0 t0 1000.0 degrees c, o/a dim. Of the blackbody 8.250 in. H, 7.500 in. W, 10.500 in. Dp, temp. Controller output 400.0 w, input 110.0 vac, 60.0 hz, single phase, o/a dim. 7.000 in. H, 19.000 in. W, 14.000 in. Dp, supplied with aperture set as5