This unique post topper is made of 100% cedar wood. The post topper is designed to slide over a 4×4 post on your deck. also, you can put a post in your yard and slide the post topper over it; for a unique yard decoration. The post topper requires no mounting screws or hardware to install. You can easily move this topper from one post to another, just lift it off and move it. Also, it makes winter storage a snap. It is designed for birdhouses or little libraries. But, you can put whatever outdoor decoration you please on it!