I used a magnet strip to cover the gap between the jamb and my steel door. This is a 1" x 10' roll (the widest they sell at Hobby Lobby and Amazon) for $4.99 at Hobby Lobby. I used the 40% off one regular item, online coupon to bring this down to $2.99. This coupon is available at all times for everything sold at Hobby Lobby by the way. This magnet is adhesive backed and I just left the protective paper on. Not beautiful, but relatively discreet and very simple. The difference in the draft coming in the door is immediate.