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The Quietcool QC-4500 (U S Patent Pending) is called the Quiet Giant. It, like it's
smaller brother the QC-1500, is an innovative whole house fan that delivers
superior performance with 4,500 cubic feet per minute of airflow while operating
almost silently. It is mounted up in the attic and connected to an attractive ceiling
grill with two patented acoustical insulated flexible ducts. This design eliminates
all vibration, rattle, and noise so common to all other whole house fans. It is so
quiet in operation that when installed in a bedroom, persons are able to sleep
without being able to hear them.
It can be installed almost anywhere in the ceiling as long as there is an attic
above. It fits between 16" on center framing, requires no carpentry work to install,
and takes less than half the time to install as a conventional whole house fan. It
comes with two separate motors and ducts, allowing for two-speed operation by
running only one motor or both motors. Each motor has insulated, positive
closing damper doors that prevent the intrusion of attic air back into the house
when they are not in operation.
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