Abstract: A unitary cover (32,32') for placement over a baseboard heater is shown having an offset portion (40) with a series of spaced apertures (42) for convection and a front panel with a J-shaped section (45,46,48) at the bottom thereof which cooperates with a tab (36) formed on a top platform (34) for snapping on to a baseboard heater housing. According to one embodiment the cover is adaptable to different sized baseboard heater housings by removable portions of upper and lower J-shaped sections (46) or the entire J-shaped section (48). Further, individual short portions of the J-shaped bights and short legs are removable to accommodate brackets, trim accessories and the like. A modified cover (32") has an additional tab (37) which cooperates with the tab (36) formed at the rear of platform (34") for snapping engagement with the top portion of the baseboard heater housing.