The Old Town Canoe Snap-in Center Seat snugly snaps over vinyl gunwales and stays in place until you pop it out. It provides an easy and quick way to add a third seat to tandem canoe. The Snap-in center seat fits in the middle of all Old Town Canoes with widths of 34" to 37". The rugged design can hold an adult or two children and carries up to 300 lbs. Consider a snap-in seat, oar sockets and oarlocks and you have a rowing canoe.
Bought this for a 1971 Gruman canoe works great
This seat fit well near the center of my 34" wide Old Town. I used it to sit 2 small children side by side, with enough leg room. BUT, for adults, check first that you can both place the seat within the canoe width AND that afterwards you will have enough legroom in front of the seat, clear of the lateral support bars. NOTE, glue a small foam strip to the back of this seat before using it so it will float, I have two at the bottom of the lake. I would give this product 5 stars if they had added the foam strip. :-)