Flexible and long-lasting, this door kit is made of Q-Lon weather stripping fit into a kerf in a wood strip. The wood strip can be painted. Q-Lon remains pliable even in the harshest weather. Each kit contains one 37” piece and two 84” pieces; the pieces can also be purchased individually. This door kit is usually installed with 4- or 5-penny size stainless steel nails, which are available separately. Use it on any door between a heated space and an unheated one, including basements, attics, and attached garages. Perfect for homeowners, tenants, and weatherization contractors.