Diodes are pre-installed in junction box, with a pair of pre-attached 3ft MC4 Cable. The high performance cells are encapsulated in EVA (ethylene-vinyl-acetate) & placed between high transparent low iron tempered glass & a durable TPT (tedlar-polyester-tedlar) back sheet. The panels are framed using heavy-duty anodized aluminum frames, providing exceptional panel rigidity. Manufactured in China/Mexico/Vietnam depend on the batches.Any product you return must be in the same condition you received it and in the original packaging. We usually respond within 24 hours on weekdays. Thank you for shopping at our store. The item "Newpowa 100 Watts 12 Volts Polycrystalline Solar Panel 100W 12V High Efficien" is in sale since Monday, December 28, 2020. This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Alternative Energy Supplies\Solar Power Supplies\Solar Panels & Kits". The seller is "goldealz" and is located in Teterboro, New Jersey. This item can be shipped to United States.