... spa cover ,outdoor spa cover, hot tub cover ,bathtub cover, swim spa cover, swimming pool cover ,spa pool cover ,wooden spa cover ,portable spa cover ,spa cover lifter ... .6) OEM service and logo also be accepted.3 The main feature as follows :1) High Quality , Excellent Workmanship ... corrosion proof, ensuring structural integrity for the life of cover.5) Corrosion Proof Nylon Zipper: Large #8 zipper ...