Super Strong Magnetic Vent Covers: Our floor vent covers are crafted from premium stronger and thicker magnetic. Thickness 60 mil (1.5 mm) with high-adhesion, ensuring this floor register cover achieves a complete seal without slippage; Rounded corners design, ensuring devoid of any sharp points or edges Custom Sized Air Vent Covers: Our magnetic vent covers for floor is 5.5 x 16 inches, Suitable for the outer dimensions of the metal floor vent's surface measure 5.5” to 5.75” width by 15.5” to 16.5” length. Standard size without trimming required. For other register vent cover sizes, please refer to our size guide picture to choose Enhance Performance: Vent cover obstructs efficiently hot or cold air movement in unoccupied spaces, thereby improving comfort by channeling air to where it is needed For Steel Vent Registers: Magnetic register vent covers are exclusively for use with steel floor registers (Vent Not Included), Not suitable for plastic, wood, or aluminum vents Multi-Purpose: Vent magnetic covers can be used for home floor, wall, and ceiling registers; they are also suitable for HVAC, AC, RV, and heater vents. Vent blockers greatly reduce noise and save energy, making your home more comfortable

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