240 Watt Walkable Semi-Rigid Solar Panel with Polycarbonate & J-Mount Brackets - Sunpower A+ Grade 24.5% Efficient Cells
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240 Watt Walkable Semi-Rigid Solar Panel with Polycarbonate & J-Mount Brackets - Sunpower A+ Grade 24.5% Efficient Cells

240 Watts of Solar Power for Boat Decks and Hardtops
Add 240 watts of rated solar power to your boat or van with the CMPower 240W Walkable Semi-Rigid Solar Panel. It combines A+ grade SunPower cells rated at 24.5% cell efficiency with a polycarbonate backing and J-mount brackets. This marine-grade solar panel delivers outstanding performance in both full and partial sun, ensuring consistent energy output even in challenging conditions.
The panel measures 31.5 x 57.5 inches and is 0.22 inches thick. Designed for the harsh marine environment, this panel is ideal for rigid mounting on boats, campervans, and vans. Its walkable surface adds durability and functionality—perfect for deck or roof installation where foot traffic may occur.
✅ The semi-rigid (walk-on) solar panel kit includes:
- PV solar panel module
- Sheet of twin wall polycarbonate backing
- Two J channel mounting extrusions
- Owner’s Manual
📦 Ships Next Day UPS Ground from Denver.

⚙️ Key Features
✅ 240W Walkable Solar Panel – Built for marine and van applications
✅ Premium SunPower A+ Grade Cells – Industry-leading 24.5% efficiency
✅ Shade Tolerant Performance – Consistent output in partial sun
✅ Lightweight & Low-Profile – Easy to install on boats, camper vans, and off-grid setups without adding bulk. Includes Poly and J brackets for secure setup.
✅ Marine-Grade Durability – Withstands salt, moisture, and foot traffic
✅ Semi-Rigid Construction – Flexible enough for installation, strong enough for walking
✅ Heat Dissipation Advantage – Performs better in hot climates compared to standard panels
✅ 5-Year Warranty – Reliable long-term performance
📏 Specifications
| 240 Watt Walkable Semi Rigid Solar Panel | |
|---|---|
| 🔧 Model | CMP24240SRX-STP |
| ⚡ Rated Power |
240 Watts |
| 🔋 Peak Power Voltage (Vmpp) | 38.3 Volts |
| 🔋 Peak Power Amps (Impp) | 6.26 Amps |
| ⚡ Open Circuit Voltage (Voc) | 45.96 Volts |
| ⚡ Short Circuit Current (Isc) | 6.76 Amps |
| 🌞 Cell Conversion Efficiency | 24.5% |
| 📏 Dimensions | 31.5" x 57.5", 800 x 1460 x 5.5 mm |
| ⚖️ Weight |
20.61 lbs, 9.35 kg |
| 🧱 Substrate | Fiberglass Backing |
| 🔲 Background Color | White |
| 🧩 Cell Layout | 6 x 11 |
| 🛡️ Warranty | 5 years (prorated) |
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Shipping
Products ship the day after payment (domestic).
- Free shipping on orders over $1,500 (Lower 48 US states).
- $65 flat-rate shipping for orders between $500–$1,499 (Lower 48).
- International shipping takes longer. No tariff charges added — call for pricing.
Custom Designs & Custom Made Panels Available on Request
Our engineers will work with you to design a solar system specific to your needs including Lithium Batteries if you like. (Batteries are 10% off w/ solar system purchase).
If you'd like a custom solar panel, we can do it at $10/watt, more info here: Custom Solar Panels
Call Us: 248-712-1526
All Product Specifications
Compare detailed specifications for our Marine Solar Panels, LiFePO4 batteries, Victron batteries, and Solar Charge Controllers. Each section includes current model data and links to related product pages.
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