Weatherproof vinyl helps keep your TEC grill protected from the elements Helps keep your grill clean and ready to cook between uses Designed to fit TEC Sterling II gas grills TEC Vinyl Grill Cover For Patio And Sterling II - On Cart With Two Side Shelves. ST30VC2. TEC Grill Covers. This TEC vinyl gas grill cover is designed for use with TEC Patio II or Sterling II gas grills on cart with two side shelves. Use with older TEC grills manufactured prior to 2007 w/ ceramic burners. Serial number of grill will begin with P2 or S2.