OOWAY 200-watt Bifacial solar panels adopt the 18-BB solar panel cell design and are made of excellent class A cells. The conversion rate is up to 25%. Compared with 5BB and class B solar cells, it has better quality and efficiency. Are a Bifacial solar panel design, which provides an extra 10 to 15 per cent more efficiency in conversion than ordinary solar panels on the market. At the same time, the inch size has been streamlined, small size and high efficiency. Size: 52.2″ × 26.4″ × 1.2, 19.4lbs lightweight. Almost 91.5% transimittance makes the back panel well convert sun scattered light even when the front side is shaded, which is widely chosen to be used in sunroom, entrance canopy, farm greenhouse and motorhome. The back panel, made of composite material, is windproof and snow-resistant. The metal aluminum frame is rust-proof and anti-corrosion. And the pre-installed hole design makes it easy to install. Solar panel kit is an eco-friendly power source designed for boat, home off-grid charging, camping and outdoor activities. Made from Class A monocrystalline cells, it absorbs sunlight efficiently, turning it into your portable power source. You can use this kit as well as other battery types to charge 12V deep cycle batteries. If you need a different wattage solar panel, maximum power, accessories, or kits, check out the other solar panel products in our store now.