This square inline duct-mount fan is good for supply, return, and exhaust applications.
What is Square Centrex (SX)?
100
This blade has a cross section similar to an airplane wing.
What is airfoil?
100
Fans located here need special considerations to protect the fan and building from the elements.
What is outdoors?
100
Static pressure varies with the ___ of the RPM.
What is square?
200
fpm
What is feet per minute?
200
This Class I heavy-gauge galvanized steel, roof/floor/inline mount utility blower with a backward inclined wheel is good for use in commercial kitchen and fume exhaust applications.
What is Dynamo (D)?
200
This wheel type can be rotated at slower speeds and used at lower Sp. It's often called a squirrel cage.
What is forward curved wheel?
200
This type of fan moves air from the inside of a building to the outside.
What is exhaust?
200
This defines the flow rate vs static pressure characteristics of a duct system.
What is the system curve?
300
DWDI
What is double width double inlet?
300
This prop fan is field reversible.
What is Breezex (BX)? (P-Series is also reversible.)
300
The blades on this wheel have a slight curve away from the direction of rotation.
What is a backward curved wheel?
300
This type of air includes grease laden, fume hood exhaust, explosive, corrosive, temperatures > 180 degrees F, emergency smoke control, process ventilation, dust, and particulates.
What is contaminated air?
300
Brake horsepower varies with the ___ of the RPM.
What is cube?
400
AMCA
What is Air Movement and Control Association?
400
This roof-mount propeller upblast fan is good for rapid air removal applications.
What is Hi-Ex (HC, HX, HF, HZ, HS)?
400
This extremely rugged wheel type available in the IND is suitable for handling granular material.
What is Type OT wheel?
400
Selecting a fan based on _____ can save money over the life of the fan compared to selecting the smallest, least expensive fan.
What is efficiency?
400
Lower density air, due to high altitude or high temperatures, can move the same volume of air with a ___ horsepower motor.
What is lower?
500
ACH
What is Air Changes per Hour?
500
This heavy-duty, high pressure construction, free standing SWSI industrial fan with three wheel options is good for general, fibrous material handling, and air handling applications.
What is IndustraCon (IND)?
500
This commercial fan has a high-efficiency cast aluminum air foil propeller.
What is BCH?
500
____ drive fans are more flexible because they can be selected at any speed and can be used in contaminated-air applications because motor is usually located outside of the air stream.
What is belt?
500
This is the negative impact on fan performance that results when the fan is connected to a duct system.