Boat part number 7800348 is a 2-piece seat cushion set from Crestliner Boats, part number 2156291. Manufactured by Wise Boat Seating, part number unavailable. These cushions are constructed out of two-tone gray and black marine grade vinyl with foam filled padding. The backrest cushion measures approximately 19 1/4 W x 18 H x 6 D overall. Features an embroidered Crestliner logo. The seat cushion measures approximately 20 1/2 W x 19 D x 6 H overall, and mounts with a standard 5 x 5 mounting pattern. Please see photos for suggested additional measurements, when cushions are mounted. Sold as a 2-Piece Set (one backrest cushion and one seat cushion). CUSHIONS ONLY - NO HINGES. Specifications: Boat Manufacturer: Crestliner Boats Part Number: 2156291 Part Manufacturer: Wise Boat Seating Part Number: Unavailable Material: Vinyl / Foam Padding Color: Two-Tone Gray / Black Backrest Dimensions: 19 1/4 W x 18 H x 6 D Seat Cushion Dimensions: 20 1/2 W x 19 D x 6 H Mounts: Standard 5 x 5 mounting pattern Sold as seen in pictures. Customers please note every computer shows colors differently. All measurements are approximate. Hardware and instruction / installation manual not included.