- Save money on your annual heating bill
- Keeps existing heat in where it belongs
- Eliminates cold drafts
- No tools required
- Fits STEEL vent size (outside dimensions): 11 1/4″ x 11 1/4″ up to 12 3/4" x 12 3/4"
- Save money on your annual heating bill
- Keeps existing heat in where it belongs
- Eliminates cold drafts
- No tools required
- Fits STEEL vent size (outside dimensions): 11 1/4″ x 11 1/4″ up to 12 3/4" x 12 3/4"
