Remove the endcaps from the baseboards. Most baseboard endcaps will pop right off. Check for any screws holding them in place if yours does not. Unscrew the endcap then remove it from the side of the baseboard.
Measure the heating element without the endcaps for the fit of the replacement cover. Take measurements from the bottom of the finned heating tube to the tip edge of the baseboard, from the wall to the front of the tube and from the top of the board to the floor.
Use the results to order a replacement baseboard heater cover with galvanized steel holes that allow the heat through rather than the traditional finned design.
Remove the existing baseboard heater cover by grasping the front panel with both hands and lifting it up and away.
Place the replacement panel over the baseboard heater with the rear ledge of the panel against the wall and push downward so that the replacement panel slides over the heating unit. Push the replacement endcaps on both ends of the panel to complete the installation.
Place a fireplace screen against the wall surrounding the baseboard to prevent the baby from reaching the heater at all.