Cut three 1x scraps to fit in a loose U-shape inside the lines. Glue and screw the pieces to the underside of the top. Caulk all seams, fill the nail and screw holes with wood putty, sand, and paint the cover's exterior. Once it's dry, use a staple gun to attach the screening to the inside of the cover. Cut a piece of sheet metal to fit behind the radiator to help reflect heat into the room. Then place the cover over the radiator.
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with ½-inch spade bit and countersink bit
Miter box and handsaw
to contour box around baseboards
Measure the front, sides and top of your radiator to determine how much you need.
Comes in 3-by-3 foot sheets. Get enough to cover the front opening and two side openings.
3. SHEET METAL
Slides behind the radiator to reflect heat outward.
4. 3/4-INCH MOLDING
to give a finished appearance to the screen openings.
5. 1 5/8-INCH COARSE DRYWALL SCREWS
to fasten the cover's sides and front.
6. 1/2-INCH STAPLES
to attach the screen to the cover.
7. WOOD GLUE
to attach molding.
8. 4d FINISH NAILS
for fastening the molding.
9. 1x SCRAP
to make cleats that hold the cover's top in place.
Check woodworking catalogs for furniture feet in metal or wood. You may need longer screws than the ones provided with the feet in order to fasten them through the thick MDF.