Page 1
METERING AIR SYSTEM Model: MAS-2 6” to 4” Reducer 4” Intake Hood The Field Metering Air System solves the “sick house syndrome” caused by too tight home construction. This unique system provides fresh air automatically, using no electricity or special controls. And it actually meters the air flow to keep the home balanced.
Page 2
(See Figure 3) Note: Some areas require insulation wrapped around the duct. This will be required if sweating occurs on the outside of the duct. Seal all duct joints and seams with duct tape or equivalent. Figure 3 PN 46384700 06/00...