Designed to meet NEMA and IP ratings, our waterproof junction boxes are ideal for outdoor use but versatile enough for indoor applications too. Electrical Junction Box, Ventilated Design, Cable Grommets, Indoor/Outdoor Use with Mounting Panel & Hinged Cover. 5 cm) Amazon's Choice highlights highly rated, well-priced products available to ship immediately. Perfect for indoor and protected outdoor areas. 0 or 4K HDMI installations in outdoor applications and other areas where protection from harsh. A properly rated outdoor junction box can stay submerged in water 10 meters deep and work perfectly.