It's self-evident that you'll need a projector casing that can withstand the projector's weight. Because projectors come in various weights, you should thoroughly inspect the hinges and joints before buying an expensive projector.
When projectors are in operation, they create a lot of heat, which causes the projector's numerous components to expand. The heat from your projector should be allowed to escape via the enclosure. This prevents the Outdoor Projector Enclosure from overheating, which might cause it to fail permanently.