# Active Ventilation SM-Rib Aluminum Static Roof Vent 12 in. Dia. NFA 113 sq. in. 4 in. Collar Mill Finish

**Brand:** [Active Ventilation](https://shop.coreranger.com/brands/Active%20Ventilation)
**SKU:** RBV-12-C4-SMRib
**Price:** $200 · in stock
**URL:** https://shop.coreranger.com/product/active-ventilation-sm-rib-aluminum-static-roof-vent-12-in-dia-nfa-113-sq-in-4-in-collar-mill-finish-342884359

## Specifications

| Spec | Value |
|---|---|
| Model # | RBV-12-C4-SMRib |
| Features | No Additional Features |
| Material | Aluminum |
| Pack Size | 1 |
| Internet # | 342884359 |
| Power Type | Non-Powered |
| Returnable | 90-Day |
| Store SKU # | 1016009438 |
| Color Family | Silver |
| Color/Finish | Mill Finish |
| Intake/Exhaust | Exhaust |
| Mounting Position | Roof Mount |
| Product Depth (in.) | 24 in |
| Product Width (in.) | 16 in |
| Product Height (in.) | 7 in |
| Manufacturer Warranty | 1 year |
| Net-Free Area (Sq. In.) | 113 |

## Description

The RBV-12-C4-SM-Rib is a premium 12 in. round-back static roof vent engineered specifically for metal roofs. This is done by featuring a 16 in. x 24 in. sub-base that is fabricated to the profile of the SM-Rib, Tuff Rib, Panel-Loc Plus, AG-Rib, and Master Rib roof designs. Having the roof vents base match the shape of the Sm-Rib roof ensures a watertight, professional fit. High-Performance VentilationOptimal Airflow: A 2 in. tall collar provides critical clearance between the roofline and the internal louvers, maximizing exhaust efficiency. Capacity: With 113 square inches of Net Free Area (NFA), a single vent effectively exhausts up to 470 square feet of attic space (based on the IBC 1/300 rule). Strategic Placement: Designed for roof pitches of 2/12 or greater. For maximum performance, install the roof vent within two feet of the ridge cap to capture and release the hottest air and moisture.

• Designed for use with metal roofs
• Internal louvers block rain, snow and wildlife intrusion
• Ventilates up to 470 sq. in. of attic space