Eureka Air Magnetic Under-Furniture Vent Extender — 18×12in base, extends to 33in, 1.0mm PET

The Eureka Air Under Furniture Magnetic Vent Extender is a flexible, magnet-mounted deflector that channels warm or cool air from low-profile floor vents beneath furniture, improving distribution and protecting furniture from direct airflow.

If a couch, entertainment center, or bed sits over a floor register, that vent’s airflow often gets blocked or wasted. This extender is engineered to slip under furniture and extend the register’s outlet so conditioned air reaches living space instead of being trapped under heavy pieces. It blends functional engineering—neodymium magnets, industrial adhesive dots, and 1.0mm PET—with an adjustable length that accommodates common register sizes and unusual room layouts.

How does this extender change airflow when furniture covers a vent?

By physically redirecting the airstream out from beneath furniture, the extender reduces localized cold or hot spots and helps more evenly distribute conditioned air within the room. Its lightweight, thin profile fits under low-clearance furniture and the smooth PET surface guides airflow without excessive noise.

• Captures airflow under furniture and projects it outward
• Thermally tested PET resists warping under HVAC temperatures
• Low-profile design fits furniture with limited clearance

Will it stay attached reliably under furniture and over time?

The extender uses strong neodymium magnets bonded with industrial-grade 3M adhesive dots to keep it firmly aligned with metal registers while resisting shifts from drafts or foot traffic. The magnetic system lets you position and remove the extender without tools, and the adhesive dots hold through repeated placement.

• Neodymium magnets provide consistent grip to metal registers
• 3M adhesive dots add secure placement where needed
• Designed for repeated installation and removal

What sizes and room setups does this product support?

The extender is manufactured at 18" by 12" by 1.5" and telescopes out to 33" so it fits common 10" and 12" registers and reaches across larger furniture footprints. Its flexibility and length adjustment make it useful for living rooms, bedrooms, offices, or any space where vents sit beneath heavy pieces.

• 18" x 12" base footprint, extends up to 33" overall
• Compatible with 10" and 12" register openings
• Flexible PET allows contouring for unusual furniture bases

How durable is the material and who engineered the design?

Constructed from 1.0mm premium PET plastic, the extender resists bending and thermal stress common near HVAC outlets while remaining flexible enough for installation under low-clearance furniture. The product reflects American engineering principles from aerospace-trained designers, emphasizing longevity and practical performance.

• 1.0mm PET delivers a balance of strength and flexibility
• Thermally tested to endure repeated heating and cooling cycles
• Designed by aerospace engineers in the USA for durability

Who is this for? The Eureka Air Under Furniture Magnetic Vent Extender is for homeowners, renters, and designers who need to rescue blocked floor vents without moving heavy pieces—people who want better room comfort, improved HVAC efficiency, and a subtle, reversible solution. It’s suitable for anyone dealing with registers placed under sofas, beds, media consoles, or built-in cabinetry who prefers a non-invasive, removable fix engineered for long-term use.