VanEssential Magnetic Insulated Roof Vent Sun Cover for 16.5 x 16.5 MaxxAir/Fantastic Fan — Charcoal Gray, 5mm Reflective Insulati

VanEssential's Magnetic Insulated Roof Vent Sun Cover is a charcoal-gray, magnet-backed sun shield sized for 16.5" x 16.5" MaxxAir and Fantastic Fan flanges that blocks radiant heat and stores flat.

This removable roof vent cover slips over standard 16.5" x 16.5" fan flanges to reduce heat transfer into campervans, RVs, and tiny homes. Constructed with 5.0mm double-foiled aluminum PE insulation and recycled PET outer fabric, it combines reflective thermal performance with lightweight, weather-ready materials. Powerful N48 Neodymium magnets secure the cover to the metal flange for a reliable seal, and a compact storage sack keeps it tidy when not in use. Note: some magnet assembly is required and this cover is not compatible with shallow-mounted fans whose knobs hang below the roofline.

How does this cover reduce interior temperature and solar gain?

The multi-layer construction reflects most incoming radiant heat and adds an insulating barrier between sun-hot roof surfaces and your interior. The double-foiled aluminum PE core reflects up to 97% of radiant heat while the foam thickness reduces conductive heat transfer. Together these layers limit how much solar energy reaches the living space, helping your ventilation or air conditioning work more efficiently.

• 5.0mm double-foiled aluminum PE insulation reflects heat.
• Insulating foam core reduces conductive transfer through the roof.
• Charcoal recycled PET outer fabric resists spills and dirt.
• Magnetic attachment forms a close seal around the flange perimeter.

Will this fit my MaxxAir or Fantastic Fan 16.5" flange?

Yes, the cover is sized specifically for 16.5" x 16.5" flanges used by MaxxAir and Fantastic Fan models. It reaches the full flange surface so magnets can attach all around and form a secure seal. Confirm that your fan is a full-depth mount; if the knob or handle hangs below the roofline (shallow mount), the cover cannot seal properly and is not suitable.

• Compatible with 16.5" x 16.5" MaxxAir and Fantastic Fan flanges.
• Requires full-surface flange contact—shallow mounts are incompatible.
• Magnets must be assembled into place during initial setup.
• Simple visual fit check before purchase prevents returns.

How do the magnets and installation work?

Powerful N48 Neodymium magnets are used to hold the cover against the metal flange. Some assembly is required to insert or align the magnets into the cover channels; no specialized tools are necessary. Once in position the magnets provide a strong, removable hold that simplifies daily use and cleaning.

• N48 Neodymium magnets provide strong attachment strength.
• Magnets sit in sewn channels—basic assembly required on first use.
• Cover detaches easily for vent use, cleaning, or stowage.
• Storage sack included for compact carrying and protection.

How durable and eco-friendly is the material construction?

The outer fabric is made from 100% recycled PET plastic bottles, giving the cover durable, water-resistant performance while reducing waste. The inner 5.0mm double-foiled aluminum PE layer resists breakdown from UV and heat exposure, and the magnetic system avoids adhesives that can fail in temperature cycles. Together these choices prioritize longevity and lower environmental impact compared with disposable sun shields.

• Outer fabric: 100% recycled PET for durable, eco-conscious construction.
• Core: 5.0mm double-foiled aluminum PE resists radiant heat and UV.
• Magnetic attachment reduces wear on seams from adhesive failure.
• Compact storage sack protects the cover when not in use.

Who is this for: VanEssential's Magnetic Insulated Roof Vent Sun Cover is designed for vanlifers, RV owners, and tiny-home dwellers who use 16.5" MaxxAir or Fantastic fans and want a removable, high-performance sun shield. It's ideal for those seeking improved interior comfort, easier AC or fan performance, and a durable, recyclable fabric option. Avoid purchasing if your fan is shallow-mounted or you cannot perform the simple magnet assembly—otherwise this cover is a practical, portable way to cut solar heat gain and keep interiors cooler.