Fast-Rack GMX Ground Mount for 16 x LONGi 505w Bifacial Solar Panels

The Fast Rack GMX Ground Mount for 16 x LONGi 505W Bifacial Solar Panels is a sturdy ground mounting solution designed for Canadian residential, acreage and off grid projects. Sized to hold sixteen LONGi 505W bifacial modules, this layout provides up to 8.08 kW of DC capacity in a compact two array format.

Built around Fast Rack’s GMX rail and leg system, the structure uses galvanized and aluminum components engineered for Canadian snow and wind loads. The design keeps penetrations to a minimum while maintaining stability and alignment across both rows. Adjustable tilt options let you set the array angle for your latitude or target season, improving year round production.

This 16 panel configuration is ideal for homes and cabins that need a dedicated solar field to pair with battery storage and modern inverters such as EG4. With clear span rails, quality clamps and grounding hardware, the Fast Rack GMX Ground Mount offers a clean, serviceable installation that supports high output LONGi bifacial panels for the long term.

Key Features

Array capacity: Fits 16 x LONGi 505W bifacial panels for up to 8.08 kW DC

Layout: Two array layout with a total width of approximately 30 ft 10 in and eight ground penetrations

Mount type: Fast Rack GMX ground mount legs and rail kit for stable, long life installation

Design intent: Engineered for Canadian snow and wind conditions using corrosion resistant materials

Tilt capability: Adjustable tilt to optimize production for site location and season

Applications: Off grid systems, residential yards, acreages and small commercial projects needing a compact ground array