How to Identify...

Skylight

Discerning Factors:

Roof-mounted in commercial buildings for overhead natural light, integrated into flat/sloped roofs minimally.

Look for labels on the unit for manufacturer, model and serial number.  Example

Smoke Vent

Discerning Factors:

Roof-mounted in commercial buildings for automatic smoke and heat release during fires, integrated into flat/sloped roofs with minimal protrusion.

Look for labels on the unit for manufacturer, model and serial number.  Example

Look for pull handles or hinges.  Example

Integral Curbs

Discerning Factors:

Integral curbs have limited or no fasteners along perimeter frame.  Example

Curb Mounted

Discerning Factors:

Unit sits on curb with obvious fasteners through frame into curb.

Louver or Vented Base

Discerning Factors:

Typically cannot be reused.