| Drive Type  Transmission type of the ventilator (belt drive or direct drive).   | Belt Drive  | 
| Impeller Type  Style of impeller that is utilized on a product (i.e. Centrifugal or Axial).   | Forward Curved Wheel  | 
| Impeller Material  Type of material the impeller of a fan or ventilator is constructed of.   | Aluminum  | 
| Housing Material  Type of material the housing of a ventilator is constructed of.   | Galvanized Steel  | 
| Includes  Describes items that a particular product includes such as mounting hardware, etc.   | Access Panels Unassembled drive package Washable, aluminum 1-inch filters Access Panels Unassembled drive package Washable, aluminum 1-inch filters Access Panels Unassembled drive package Washable, aluminum 1-inch filters  | 
| Max Inlet Temp  The maximum entering air temperature that a fan or ventilator can withstand while in operation, without compromising the life of the unit.   | 120 °F  | 
| Certifications  Certifications   | AMCA Sound & Air UL/cUL 705 AMCA Sound & Air UL/cUL 705  | 
| Drive Package Description  Describes whether the drive package on a particular ventilator is assembled, shipped loose, or must be provided by the customer.   | Motor and drives shipped loose  | 
| Required Accessory  Describes what accessory(s) must be purchased in addition to make the product fully functional.   | Roof curb for new roof installations  |