The following is a compilation of other brands and may or may not apply to a particular brand.

AES -The "Custom Built" Air Curtain		The Competition - Ind Series
Frame
Tubular steel		Tubular aluminum or angle iron
Absolute rigidity with no deflection to 30 ft. in width		Units over 8 ft. sag, throwing blowers out of alignment. Decreases life. Increases maintenance.
Exterior
Enamel on galvanized steel - totally enclosed		Galvanized Steel - Motors outside case
Attractive appearance, corrosion resistant - All components ae totally enclosed with the air curtain		Poor ascetics. Even in a warehouse, appearance counts
Motors
Belt drive, totally enclosed		Direct drive, open motors
Long life, dust free. Infinite velocity adjustment for different heights of opening. AES uses a velocity of 300 ft./min per ft. of height		Motors take in dust, reducing life. Velocity is pre set by RPM. One velocity does not fit all heights.
Blower Shaft
Single shaft per blower		Multiple blowers per shaft
Ease of maintenance. Individual blowers may be easily replaced		All blowers must be replaced if one is damaged or fails
Shaft Coupling
Vibration dampening coupling between each blower		None. Single shaft for multiple blowers
Smooth operation. Vibration from one blower is not transmitted throughout the air curtain. Ease of maintenance.		More change of misalignment. Difficult, expensive maintenance
Air Intake
Front		Top
No obstruction to air intake		Air intake is restricted when overhead door is raised
Discharge Vanes
3 rows of 2 ft. long, AES designed Vanes		Flat, generally all vanes must be pointed in the same direction
Extruded aluminum. Infinite adjustment of air flow for individual applications. Every vane can be individually adjusted. 'Tear drop' shape provides maximum efficiency with laminated air flow.		No adjustment for individual applications. No lamination of air flow.
Plenum
5" deep full length		Direct discharge
Plenum allows air to mix between blowers largely eliminating dead spaces in the air flow.		The space between blowers is 'blanked' off causing a large V shaped area between each blower with no air flow protection against the intrusion of cold air.
Control Panel
AES exclusive one cabinet panel		No controls or separate components for each function
Panel contains on/off switch, motor overload protection, disconnect and connection to door operated micro switch which is also included		Added cost. Added mounting space required
Mounting
Two methods		Single method
May be mounted by suspending from ceiling joists or by knee braces		If the one mthod does not fit, the cost of the installation is greatly increased
Design
Custom design for every application		Off the shelf
The air curtain you receive will 'work' in your application. It has been custom designed to do so!		A one size fits all philosophy. One size does not fit all! Try this concept by towing a large trailer with a 'Smart Car'.
Delivery
Four to six weeks		One week
The air curtain you receive will 'work' in your application. It has been custom designed to do so!		You receive a cookie cutter design air curtain

When comparing air curtain brands for purchase, make sure you are comparing apples to apples. A lower price can also result in:

• Performance that falls short of your requirements
• Higher installation costs
• Higher maintenance costs
• Shorter operating life

The joy of receiving the lowest price is very often offset by the pain of subsequent costs!