Three speeds and save smart costs less than 2 per hour to operate make this an ideal fan for any room where you need to increase cooling airflow.
Lasko weather shield box fan with thermostat.
Model 3720 this high performing box fan from lasko features a patented weather shield motor for worry free window use plus a high performance grill for ultimate air flow.
The ultra performance grill design provides up to 20 more airflow.
20 more air flow than the traditional box fans.
This high performance fan runs on three quiet speeds and includes the exclusive weather shield motor making it safe to use in windows.
The adjustable thermostat turns the fan on or off automatically.
The fan s weather shield motor design allows for weather secure window use with enhanced power for the aerodynamic blades which create enhanced air velocity.
Ultra performance grill design moves up to 20 more air than basic box fans.
It has a patented motor for worry free window use.
An ultra performance grill design allows up to 20 percent more air flow.
Product overview customize your air circulation with this lasko weather shield select 20 in.
Easy to use top mounted controls with sturdy top mounted handle.
A wider steel body offers greater stability and durability.
The ultra performance grill design provides up to 20 more airflow.
User manual order parts.
User manual order parts.
Keep the air in your home or office circulating with the lasko weather shield box fan with thermostat.
Three energy efficient speeds and the weather shield motor for worry free window use.
Top mounted controls and built in carry handle make this fan easy to use and move from room to room.
Look out for our weather shield series which has a patented motor so you can place it by a window without having to worry about weather damage as well as 20 box fans with the innovative wind ring system for up to 20 percent more air.
Model b20570 lasko s weather shield select 20 box fan features an adjustable thermostat to turn the fan on or off automatically.
Lasko s 20 power plus box fan features the powerful weather shield motor for worry free window use.
Lasko weathershield select 20 box fan with thermostat.
Adjustable thermostat turns fan on or off automatically great for nightime use in a window.
Model b20573 lasko s weather shield select 20 box fan features an adjustable thermostat to turn the fan on or off automatically.
Made in america our 20 inch box fans from lasko feature all the technological innovation you expect.
Weather shield performance box fan 3720 this premium high performing box fan from lasko features a patented weather shield motor for window use plus a high performance grill for ultimate air flow.
Step up to lasko s 3 speed weather shield performance box fan and enjoy the benefits of the wind ring system featuring an exclusive grill design that focuses the air movement to increase its velocity.