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Instructions for determining your cover size & style:
- Determine if your registers are aluminum or steel by placing a magnet on the face of the vent itself. If it sticks to any part of the face, it's steel. If it only sticks to the screws, it's aluminum. If your registers are made of plastic, use our covers for aluminum registers (note: some plastic registers have recessed screws - if this is the case, simply install 4 self-tapping screws into the face of the register for the magnets to catch).
- Measure the outside dimension of your register. This measurement will correspond to the Elima-Draft cover item number (ie: ELMDFT11A will fit a register 11" in diameter that is aluminum).
- If you have a forced hot air system the same steps apply to our Filtered Allergen Relief covers.