Lasko 3733 20" Box Fan vs Lasko Weather-Shield 3720 Box Fan

Both are 20-inch Lasko box fans with three speeds, so the choice comes down to build and cord length. The 3720 Weather-Shield is the sturdier fan: a heavier aluminum housing, a longer cord and a much larger pool of owner ratings that average slightly higher. The 3733 is lighter and simpler, which suits a window sill or a spot where you move the fan often. Most shoppers are better served by the 3720 unless weight and a compact frame matter more to you.

• Choose the Lasko 3733 if you want a lighter, simpler box fan for a window or a small room and don't need a long cord.
• Choose the Lasko Weather-Shield 3720 if you want the sturdier aluminum build, a cord that reaches across a room, and the model with the larger track record of owner ratings.