... wood plastic composite, 2) recycled and environment protected,save forest resources, 3) ideal for outdoor ... more close to natural and elegantIts recycled, environment protected and saving forest resources, it meets the ... trend of saving the earth.UV-protected, anti-mildew, anti-freezing and cracking, anti- ... frame, the recommended gap between two joists is 12” to 14”, the joist can be wpc ...