Elima-Draft Commercial 1-Way Air Deflector Vent Cover for 24 x 24 Diffusers
- Four Pack - Magnetic Vent Covers (if a regular magnet sticks to your vents, these will too! They're very strong! -- Don't buy for wooden, cast iron,....
- Creates Air Tight Seal for Ceiling Vents, Wall Vents, and Floor Vents.
- Extremely Strong - Uses Anisotropic Magnet Technology (Stronger than Isotropic Magnets).
- 2mm thick (4x thicker than .5mm Vent Covers).
- 12" x 5.5" (Can be cut to size) Fits Most Vents (Steel Registers) NOT for use with aluminum, cast iron, painted, plastic or wood registers.