Powder Coated Ventilated Slotted Cable Tray Outdoor Weather Resistant Cable Support System | Anti Corrosion Open Slot Steel Tray for Exposed Industrial Cable Routes Product Overview This powder coated ventilated slotted cable tray is engineered for outdoor industrial cable routes. Open slots along the base and rails release heat continuously, while a cured powder coating seals the metal sheet against rain, sun and airborne dust. Used as a weatherproof cable support tray and