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Broan ultra humidity sensing fans deliver premium ventilation to help reduce airborne pollutants, ease of installation, energy efficiency, consistent power, extremely quiet operation and multi-speed capability. Upon installation, a continuous cfm ADJUSTMENT dial is set to precisely control the airflow for the size of your house. A TIMER dial (adjustable from 5-60 minutes) is set at the same time to control how long the fan runs at maximum cfm, before automatically returning to the lower continuous ventilation level – all after you leave the room. Ultra quick installation technology uses an exclusive telescoping mounting frame with pre-installed screws, snap-in housing, snap-in blower and an inside-out mounting duct connector – fastest, easiest, most universal installation. Retrofit installations can be done entirely from the room-side – no attic access required. Unique telescoping mounting frame can be placed and fastened through drywall Hole because it expands from 14 – 24-inch and fits any type of joist, i-joist or TRUSS construction. Snap-in housing and blower further simplify installation since you can hear – and feel – when they are properly seated. Easy-to-position carriage allows housing location ADJUSTMENT between joists so you can control the correct ceiling placement. Ultrasmart dc motor & control technology provides energy efficiency almost 10 times greater than energy star requirements and maintains rated power (cfm) in nearly every installation. Compatible with radiation damper rdfu which helps prevent flame and heat from spreading to other areas in multi-level Buildings. In some cases an accessory wire jumper kit is required. This kit provides the additional lighting and sensing wire length necessary to bypass the damper. Can be used to comply with ashrae 62.2 and calgreen.
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