NNL Railings - NW Natural Lighting’s railing division, NNL Railing, has been installing designer, custom, glass, picket, and cable aluminum railing and decking options since 2000. Our work is featured on buildings in Snohomish, King, and Pierce counties. From our high rise condominiums, and commercial projects in Seattle and Bellevue, to our residential customers in Edmonds, and Kirkland, we pride ourselves on a job well done.