John W McDougall Co., Inc.

(615) 321-3900
Industrial and Architectural Metal Contractor

Series 400 & 408 Wall Panel Attachment Systems

The Series 400 rainscreen panel system is a rear ventilated rainscreen system that also provides a ½" wide x 1" deep reveal between adjacent panels. This system is the proven solution to exterior and interior panel needs when visible caulk joints are not desired. Pockets within the continuous perimeter extrusions receive reveal strips that fill the ½" gap between the panels. This reveal strip can be supplied in matching or contrasting colors giving the Series 400 systems a clearly defined joint line between the panels.

Most recently our Series 400 Rainscreen System has been improved to a 408 Pressure Equalized Rainscreen System that has satisfied all requirements of the AAMA 508 test. This allows us to offer both systems for our customers - the Series 400 RearVentilated Rainscreen and our new Series 408 Pressure Equalized Rainscreen System which is a certified Pressure Equalized Rainscreen Panel System.

Below are details of our Series 400 Rear Ventilated Rainscreen System. If you would like details of the Series 408 Pressure Equalized Rainscreen System, please contact Larry Farris at 615-301-0780 or

 For our top of the line dry gasket system, find out about our McDougall Series 500 System.