Ventilation Guide

Go to Option 1 (Known)

APPLYING OPTION 2
Select Soffit NFA Averages

Enter attic and soffit panel info.

Attic Area (sq ft):

Overhang of Soffit (inches):

Length of Soffit with Panels (ft):

Soffit Material:

Soffit Type:

Panel Exposure:

Panel Profile:

NFA of Selected Soffit Panel: N/A

Required Intake NFA: N/A

Intake of Specified Panels: N/A

Message:

Boost Intake NFA with Lomanco Deck Air

Model DA-4, 36 sq in NFA

DA-4 required to fix specified intake: X Vents

DA-4 for total required Intake NFA: X Vents