ProMaster Fan Installation Adapter
Install a roof fan on your Ram ProMaster with confidence using this ProMaster Fan Installation Adapter, engineered to solve one of the biggest challenges of ProMaster builds: an uneven roof surface. This adapter creates a flat, sealed mounting platform, allowing you to install a roof fan cleanly and securely—without fighting factory roof ribs or curvature.
Designed specifically for 14" x 14" fan openings, this adapter fits seamlessly along the centerline of the ProMaster roof, giving you maximum flexibility when planning your interior layout. Whether you're installing a fan for airflow, temperature control, or moisture management, this adapter ensures a proper seal and long-term reliability.
Manufactured from durable, heat- and UV-resistant plastic, it’s built to withstand harsh sun exposure and temperature swings—perfect for full-time vanlife, weekend adventures, or commercial builds. Fully compatible with Maxxair roof-mounted fans, this is a must-have component for any ProMaster ventilation upgrade.
Key Features
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Designed for Ram ProMaster Roofs – Accommodates factory roof bumps and curvature
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Flexible Mounting Location – Install anywhere along the center of the roof
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14" x 14" Fan Opening Compatibility – Standard size for most roof fans
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Creates a Flat Mounting Surface – Ensures proper sealing and fan performance
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Durable Plastic Construction – Heat- and UV-resistant for long-term use
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Maxxair Compatible – Ideal for Maxxair roof-mounted fans
What’s Included
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(2) Interlocking L-shaped trim ring pieces
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Assembles into one complete square trim ring
Specifications
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Opening Size: 14" x 14"
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Width: 14"
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Height: 14"
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Depth: 6"
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Weight: 10 lbs
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Packed Weight: 7 lbs
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Material: Heat- and UV-resistant plastic
Installation Notes
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Adapter ships as two L-shaped pieces that slot together
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Place over your 14" x 14" roof cutout
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Seal thoroughly using a quality sealant (recommended: Sikaflex 715)
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Ensure all edges and contact points are fully sealed for a watertight install
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Mount fan onto the flat surface created by the adapter
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Longer mounting screws may be required depending on fan model
Shipping Information
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Processing Time: 1–3 business days
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Shipping Time: 1–4 business days
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Packaging: Flat packed for efficient shipping
Compatibility
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Ram ProMaster Vans
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14" x 14" roof fan openings
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Maxxair roof-mounted fans
Why This Adapter Matters
The ProMaster roof isn’t flat—and skipping a proper adapter often leads to leaks, poor fan sealing, and long-term water damage. This ProMaster Fan Installation Adapter eliminates those risks by creating a level, sealed foundation that allows your roof fan to perform exactly as intended. Whether you’re a DIY builder or professional upfitter, this adapter saves time, prevents costly mistakes, and ensures your ventilation system is built to last.
