Seatern Magnetic Vent Covers - Ultra Thick 60mil, Extra-Strong Magnets, 5.5 x 12 in, 4 Pack

Seatern Magnetic Vent Covers: Ultra thick, extra-strong magnets for steel vents

Manage airflow with a simple, durable solution designed for steel vent faces. Seatern Magnetic Vent Covers deliver a secure, slip-free seal and a clean, integrated look across home, RV, and facility venting. Each cover measures 5.5 by 12 inches and uses a robust 60 mil thickness to stand up to daily use while remaining trim-friendly for a tailored fit. The result is a practical way to reduce drafts in unoccupied spaces and direct air where you want it most, without replacing existing vent hardware.

Key features that matter

• Designed for steel vents; not suitable for aluminum or plastic vents
• Cover size 5.5 x 12 inches; 60 mil thickness; rounded corners; trim to fit
• Extra magnetic strength up to 650 Gauss for a secure, slip-free seal
• Airflow control that helps direct air to where it matters
• Versatile use for home, HVAC, AC, RV, and heater vents

The combination of a thick, resilient shell and a strong magnet provides a practical, reusable option for keeping unwanted airflow in check. Expect a flush appearance that blends with existing registers while maintaining easy access for removal or repositioning as needed.

Sizing, fit, and daily use

• Measure your vent face before ordering; the covers can be trimmed to fit
• Test with a small magnet on your vent to confirm compatibility before purchasing
• Expect a near seamless seal that helps reduce drafts and light leakage

Notes for best results: these vent covers are intended for steel vents only. They are not meant for aluminum or plastic vent faces. If your vent face differs from the listed size, refer to the size chart in the product gallery and consider trimming to achieve the desired fit. The 650 Gauss magnet strength is designed to deliver a strong grip without slipping during regular use.