This ash canoe seat is 10” wide x 34" long. The 34” seat has a 10" x 13" seating area, and the rail centers are 8-1/2". They are assembled with mortise and tenon joinery. Our clear varnish is UV-resistant. The 1-1/2" polypropylene webbing makes this seat a durable and weather-resistant option, even when exposed to harsh elements for extended periods of time, with less care and maintenance than a traditional caned seat.