This question is important. Outdoor panels are usually seen from further distance, thus resolution will be lower. Outdoor led panels will likely be brighter because they are used in sunlight. Also outdoor panels will be more durable as they need to withstand weather conditions, dust, moisture and dirt. Indoor panels offer superior color, smaller pixels and a more refined picture. For the same pitch, indoor screens are cheaper. For all these reasons, we recommend indoor panels, unless you actually need to use an outdoor screen.