What is an IC Housing?

For electrical discharge lamps, this is the voltage measured across the discharge when the lamp is operating. It is governed by the contents of the chamber and is somewhat independent of the ballast and other external factors.

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Non-IC light housings are for use in areas where they do Not make direct contact with ceiling insulation. If your application requires the housing making direct contact with insulation, purchase housings that state they are "IC" rated.This means that these housings can NOT make direct contact with insulation. Some codes allow you to use and space the insulation 3" away and some codes do not allow you to use NON "IC" Housings at all if insulation is present. These housings are still used ...

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A "New-Construction" Housing  is meant to be used when there is open access to ceiling joists. A New-Construction housing has hangers bars that allow the recessed  housing to be mounted directly to the joists. If you have open ceiling access a New Construction housing can be used on existing homes as well.

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An "Air-Tight" or  "Air-Tite"  housing  is sealed to stop air from escaping through the recessed housing cut-out into the ceiling or attic. Many states currently require the use of Air-Tight housings in order to meet energy conservation codes, check local codes for more information.

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Line-Voltage Housings do Not require any transformer, they can be directly wired into your home's 110V/120V electrical system. Line-Voltage Housing are more commonly used because of their lower cost due to not needing a transformer, and also offer more versatility allowing the use of incandescent or halogen lamps.

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