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The LASKO 3733 is a 20-inch box fan built for high-volume air movement in residential and light-commercial settings. Its slimline profile keeps the footprint compact, making it a practical fit for smaller rooms, workshops, garages, or tight utility spaces where a full-depth fan would be in the way. Three whisper-quiet speed settings let the installer or end user dial in airflow without excess noise. The unit is UL listed and weighs approximately 6.95 pounds, so it moves easily from room to room without tools or extra labor.
This fan is suited for residential ventilation, spot cooling in utility areas, and supplemental airflow in spaces that need circulation without a permanently mounted unit. The carry handle supports quick repositioning between jobs or rooms. Electricians and HVAC technicians often specify portable box fans for temporary ventilation during system service or for supplemental cooling in equipment rooms and server closets.
Designed as a freestanding portable box fan for general residential and light-commercial ventilation applications. No specific system integration or OEM replacement compatibility is stated for this unit.
No hardwiring is required. The fan plugs into a standard household outlet. Position the unit so the intake and exhaust sides are unobstructed to maintain rated airflow. Keep the power cord clear of foot traffic and away from water sources per NEC guidelines for portable appliances.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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