Need advice on stores selling replacement gunwale for canoes in Northern Virginia/D.C. area

Brand new to canoeing and fishing, just got a 13 foot Canoe that needs new gunwales. I intend to replace it myself with the help from my young kids (fun, isn’t it?).

After some research, it seems aluminum gunwales (2-piece) will be good.

But I have no idea where to order and pick up locally, otherwise, online shipping cost will outweigh the benefits. I live in Fairfax County in northern Virginia near Washington D.C…

Any advice on good local outfitter store carries replacement aluminum gunwale near the D.C.? Thanks in advance!

For example, looking for something like this but near Washington D.C. area.