guided rearwardly to engage with the sleeve portion from the front of the dryer a support bracket 62 is provided which is attached at a top end 64 near the front end 42 of the heater box 40 by a pair of threaded fasteners 66 a bottom end 68 of the bracket 62 is secured to a bottom wall 70 of the dryer cabinet 12 again by a pair of threaded fasteners 72 the bracket 62 is sufficiently tall to space the heater box 40 above the bottom wall 70 of the dryer cabinet 12 to permit an air exhaust conduit indicated by dashed lines 73 in fig3 to pass beneath it to exit through a sidewall in the dryer cabinet as is described in greater detail in pending application ser no 924 309 a reflective shield member 74 is attached to a front side of the bracket 62 by a threaded fastener 76 and also includes a bent tab 78 which extends into a punched opening 80 in the bracket 62 to prevent rotation of the reflective shield 74 about the fastener 76 on the bracket 62 the reflective shield has a generally rectangularly shaped upper end 81 which has an outer periphery slightly larger than the generally rectangular front open end 42 of the heater box 40 the upper end 81 of the reflective shield member is spaced forwardly away from the open front end 42 of the heater box and.