step 1.use in big Spa,whirlpool and hottub 2. Step1.Model:ST02-792.Spec.:790*600*490mm3.Color: Gray/Red/Coffee/Teak wood4.The dimension can be changed according to your request.5.Benefits:-Waterproof,damp-proof,moth-proof,mildew-proof,UV-proof,fire resistant,corrosion-proof-Green,Environmental-friendly,save-engery products