Labconco Protector XL 1124 Series User Manual page 78

Appendix G: VAV Floor-Mounted Open Area Guidelines
c. Free opening area
i. Multiply the width opening times the vertical opening (A x
ii. Divide this by 144 to arrive at square feet, and enter that here:
2. Determine bypass or "leakage" area (D) from the table below
Nominal
exterior width
(ft)
8
10
12
16
3. Determining Total Effective Opening Area
a. This is the Free Opening Area plus the Bypass Opening Area
(C + D = Total Effective Opening Area)
Total Effective Area = _____________ square inches
Total Effective Area = _____________ square feet
74
B), and enter that here:
Free opening area = _____________ square inches = C (sq in)
Free opening area = ____________ square feet = C (sq ft)
Bypass or
"leakage" area
(sq ft)
0.47
0.96
1.07
1.35
Bypass or
"leakage" area
(sq in)
68
138
154
194
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