Whole House Fan For Homes With No Attic Area - 800 cfmThe TC1000-H operates on a single speed (high at 800 cfm) and is used in solid roof or sidewall applications for whole house cooling where interior attic installation is impossible. The TC1000-H is an roof mounted attic/whole house fan. The TC1000H is installed in a solid roof with plenty of flange area for flashing it into place.  The unit can be installed horizontally or vertically and can be spaced out to the ceiling below with a “thimble”.  A return air grille finishes the product off.  The TC1000-H quietly moves 800 cfm and includes and insulated, motorized damper mounted under the external hood to seal the unit off from inclement weather.Power Requirement115VAC 60HzFan Running High110 watts 1.5 ampsFan Running Low50 watts .73 ampsLift Motor Running6 wattsOpen/Close Time10 secondsHigh Air Flow800 cfmLow Air FlowN/AR Value Through Insulation6.1Rough Opening12.5"' x 27"Flange16.875" x 36" x .25"Cover Height Above Flange5"Box Depth Below Flange2.5"Htg Deflection Temperature180°FColorWhite Weight16 pounds