Counterweight Single Sided Inlet

Model No. SPW-1200

RSO: 22" W x 15.5" L

CFM: 1,200 @ .05 SP

Shipping Wt: 6 lbs

Housing Material: Plastic

Lid Material: Foam

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These units are activated automatically by negative pressure in the barn. A frictionless Styrofoam flap on a PVC continuous hinge swings down, accessing the main room to clean attic air. Flap has adjustable counter-weight to regulate air flow.

Bottom part of housing is insulated to minimize condensation, dripping, or freezing. Ideal for use in combination with re-circulation ducts. All Inlets are constructed with removable insulation stops.

Dimensions and Parts List

Rough Size Opening