Skip to content
Lomanco PRO4-N OmniRidge Vent Black 12" x 4 ft. Ridge Exhaust Vent
Regular price $13.68Orders start at $399 — combine any items to reach the minimum. Learn more
Lomanco PRO4-N OmniRidge Vent Black 12" x 4 ft. Ridge Exhaust Vent
The Lomanco PRO4-N OmniRidge Vent is a low-profile black ridge exhaust vent, 12" wide by 4 ft. long per piece, delivering 18 sq. in. of net free area per linear foot. Its Posi-tabs contour to shingles for improved weather protection, and it should be installed with intake vents near the lower attic to balance airflow.
Key Features:
- 18 sq. in. NFA: Provides 18 square inches of Net Free Area per linear foot.
- Low Profile Design: Advanced low-profile design blends into the ridge line.
- Posi-Tabs: Posi-tabs contour to shingles for improved weather protection.
- Rids Attic Heat: Exhausts damaging heat and moisture from the attic when properly installed.
- 4 ft. Sections: Comes in 4 ft. sections for straightforward ridge coverage.
- Balanced System: Works in conjunction with intake vents located near the lower part of the attic space.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Lomanco |
| Sell unit | 1 piece, 12" x 4 ft. |
| Product line | Lomanco OmniRidge Pro (PRO4-N) |
| Dimensions | 12" wide x 4 ft. long |
| Color / finish | Black |
| Net free area | 18 sq. in. per linear ft. |
| Length | 4 ft. |
| Width | 12" |
| Design | Advanced low profile |
| Intended use | Attic exhaust ventilation at the roof ridge |
Coverage & How Much You Need:
Each 4 ft. section provides 18 sq. in. of net free area per linear foot, or 72 sq. in. per section. Divide required attic ventilation by 18 to determine total ridge feet needed, and balance with intake venting at the eaves.
Fit and Compatibility:
Designed to run along the ridge as the exhaust component of a Lomanco ventilation system; pair with Lomanco intake vents such as soffit or starter vents near the lower attic. End caps and fasteners per manufacturer instructions are used during installation.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One black Lomanco PRO4-N OmniRidge vent section, 12" wide x 4 ft. long.
Q: How much venting does it provide?
A: 18 square inches of net free area per linear foot; multiply your total ridge footage by 18 for total NFA.
Q: Do I need intake vents with it?
A: Yes; the manufacturer specifies use with intake vents located near the lower part of the attic space for balanced airflow.
Q: How does it handle weather?
A: Posi-tabs contour to the shingles for improved weather protection along the ridge.
Q: Can I cut it to length?
A: Sections are 4 ft. long; follow Lomanco installation instructions for trimming and end treatment.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Ridge exhaust vents like the PRO4-N work only with matched intake; rule of thumb is to size intake NFA equal to or greater than exhaust NFA, so 18 sq. in./ft. here sets your soffit requirement. Run the vent continuously from ridge end to ridge end and keep it low-profile so shingles lay flat over the Posi-tabs. Never mix competing exhaust types on one roof plane, as that can short-circuit airflow.
Cutting and nailing along the ridge requires working at height; follow ladder and fall-safety practices and local building codes for attic ventilation ratios.
Upgrade attic exhaust with the Lomanco PRO4-N OmniRidge Vent, 18 sq. in. NFA per foot in 4 ft. black sections.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
