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Fiber board sheets are available with pre-cut shiplapped ends

Fiber board sheets are available with pre-cut shiplapped ends
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Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long

Fiberglass duct board typically comes in sheets 4 foot wide by 10 foot long
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Fiberglass mesh tape is installed around a duct boot in preparation for air-sealing the seams with mastic.

Fiberglass mesh tape is installed around a duct boot in preparation for air-sealing the seams with mastic.
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Filler blocking

Filler blocking
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Fitting rigid foam in garage wall rim joist cavities

Fitting rigid foam in garage wall rim joist cavities
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Flip the breaker to turn the heat pump water heater back on after cleaning the air filter

Flip the breaker to turn the heat pump water heater back on after cleaning the air filter
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Floor Above Garage

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Floor joist cavities can make acceptable duct chases

Floor joist cavities can make acceptable duct chases
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Floor joist cavities can make acceptable duct chases

Floor joist cavities can make acceptable duct chases
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Flowhood is sealed against the irregular surface using pipe insulation along the edge of the hood to complete an airtight seal around the terminal.

Flowhood is sealed against the irregular surface using pipe insulation along the edge of the hood to complete an airtight seal around the terminal.
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Foam holes in open-web floor trusses to completely seal the rim joist

Foam holes in open-web floor trusses to completely seal the rim joist
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For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity

For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity
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For homes with heating registers in the ceiling or floor, air seal where the duct boots meet the ceiling drywall or the flooring to prevent heat loss around the register.

For homes with heating registers in the ceiling or floor, air seal where the duct boots meet the ceiling drywall or the flooring to prevent heat loss around the register.
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FORTIFIED Animation: Attached Structures

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Front view of horizontal air handler showing condensate drain pans and drain lines

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Front view of horizontal air handler showing condensate drain pans and drain lines
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Front view of horizontal air handler showing condensate drain pans, pipes, and controls

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Front view of horizontal air handler showing condensate drain pans, pipes, and controls
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Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, and condensate drain pans, drain pipe and trap, and drain overflow safety cut off switch

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Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, and condensate drain pans, drain pipe and trap, and drain overflow safety cut off switch
CAD File:

Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, emergency drain pan, and drain overflow safety cut off switch

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Front view of horizontal air handler showing outdoor air intake, dampers, supply and return, emergency drain pan, and drain overflow safety cut off switch
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Front view of vertical air handler condensate disposal and controls

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Front view of vertical air handler condensate disposal and controls
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Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented

Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented
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Gaps between garage and conditioned space are properly sealed by carefully cutting and then caulking wood sections to fit between trusses above shared walls.

Gaps between garage and conditioned space are properly sealed by carefully cutting and then caulking wood sections to fit between trusses above shared walls.
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Garage ceiling with spray foam, flash air-seal, and batt insulation.

Garage ceiling with spray foam, flash air-seal, and batt insulation.
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Garage door failure due to negative pressures from hurricane force winds.

Garage door failure due to negative pressures from hurricane force winds.
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Garage door failure due to positive pressures from hurricane force winds.

Garage door failure due to positive pressures from hurricane force winds.