FlexTower-Top Enclosure

The FlexTower-Top Enclosure is the upper section of the Fortress Power FlexTower, an all-in-one energy storage solution. This top enclosure is purpose-built to house one inverter—Fortress Power True Envy 8kW, 10kW, or 12kW, or Sol-Ark 12K/15K—providing clean, space-saving integration into your solar or backup power system.

Note:Inverter and batteries sold separately.

Product Highlights

• Top Enclosure Only: Designed specifically to house one inverter
• Inverter Compatibility:
• Fortress Power True Envy 8kW / 10kW / 12kW
• Sol-Ark 12K or 15K
• Built for Integration: Part of the modular FlexTower system, combining battery, inverter, and charge controller into a unified unit
• Remote Monitoring Ready: Supports full system visibility via LCD display and mobile app
• Cooling: Integrated fan-cooling system ensures optimal thermal performance
  
  

Technical Specifications

• Model: FlexTower Top Enclosure
• Material: Powder-coated carbon steel
• Protection Ratings:
• IP65 – water and dust resistant
• NEMA 3R – suitable for indoor and outdoor installation
• Dimensions (W × H × D): 29.2" × 42.05" × 17.8"
• Weight: 111.8 lbs (50.7 kg)
• Mounting & Wiring:
• Side knockouts for PV, grid, and generator input
• Compatible with AC or DC-coupled PV systems
• Certifications: UL 1741, UL 1741-SA, UL 1973, UL 9540, UL 9540A
• Warranty: 3-year DuraRack Enclosure Warranty
  
  

Why Choose the FlexTower System?

• All-in-One Energy Solution: Consolidates inverter, battery, charge controller, and control panel
• Supports Multiple Use Cases: Off-grid, backup, time-of-use, zero export, VPP, and more
• Whole-Home Backup Ready: 200A grid pass-through eliminates the need for a separate backup panel
• Highly Efficient & Scalable: >98% battery roundtrip efficiency, expandable capacity, and support for advanced LFP batteries
  

Perfect For:
Residential and commercial solar installations
Whole-home backup systems
Installers and homeowners seeking a clean, pre-integrated energy storage solution