Eureka Air Under-Furniture Magnetic Vent Extender — Heavy Duty, Telescoping 18–33" Reach for 10"/12" Registers

When floor or toe-kick vents sit partially or completely beneath heavy furniture, rooms can develop uneven temperatures and wasted energy. The Eureka Air Heavy Duty Under Furniture Magnetic Vent Extender is an adjustable channel that captures outgoing air and extends it past obstacles so heating and cooling systems work more effectively. Built from thick PET plastic with engineered neodymium magnets and 3M adhesive, this extender balances durability, flexibility, and a secure attachment for long-lasting use.

How does this extender improve room comfort?

The extender redirects airflow away from obstructions and toward the open space in the room, reducing cold or hot spots. By moving air past furniture rather than against it, the HVAC system distributes conditioned air more evenly, supporting faster temperature equalization.

• Channels air up to 33" from the register to clear furniture blocking vents.
• Prevents wasted airflow that would otherwise be trapped beneath sofas or cabinets.
• Helps reduce strain on your heating and cooling system by improving circulation.

Will it fit my vents and furniture layout?

The extender measures 18" long by 12" wide and stands 1.5" high, with a telescoping design that expands to 33" to accommodate many common configurations. It is specifically sized to fit 10" or 12" floor registers and slides under a range of furniture heights while remaining flexible enough to conform to slight obstructions.

• Adjusts from 18" to 33" for customized reach around different furniture depths.
• Works with standard 10" and 12" register openings without modification.
• Low-profile 1.5" height keeps it tucked beneath most sofas, dressers, and counters.

How secure and durable is the attachment method?

Security is achieved through strong neodymium magnets paired with 3M adhesive dots that lock the extender to the metal frame of the register. This combination ensures reliable placement under heavy furniture while still allowing removal if you need to reposition or clean the vent area.

• Neodymium magnets deliver a high holding force for steady placement.
• 3M adhesive dots add backing support to prevent shifting over time.
• Constructed from 1.5mm premium PET plastic, about 50% thicker than standard extenders.

How is the product built and where is it engineered?

The Heavy Duty extender uses thermally tested PET plastic that offers both stiffness and a degree of flexible give to withstand regular use. The product is designed by a U.S.-based team of aerospace engineers who focused on material strength, magnet performance, and installation simplicity.

• Thermally tested 1.5mm PET resists warping and retains shape under normal HVAC conditions.
• Engineered in the USA by aerospace professionals for precise tolerances and reliability.
• Made for repeated use — durable enough to remain under furniture for years.

Who is this for? The Eureka Air Heavy Duty Under Furniture Magnetic Vent Extender is ideal for homeowners, renters, and commercial spaces that experience blocked floor or toe-kick vents because of furniture placement. If you want to improve airflow without rearranging heavy pieces, reduce temperature imbalances, or make HVAC delivery more efficient, this adjustable, magnet-mounted extender offers a durable, low-effort solution designed for long-term performance.