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Slant Back Roof Vent — 17 x 18 in., Black Plastic
- Mfg.#
- 90121
- Sku#
- 4519583
- Constructed of high-impact plastic with UV inhibitors
- Flashing dimensions: 17 in x 18 in
- Provide 61 square inches of net free area per piece
- For 3/12 to 12/12 roof pitch
- Fully screened with rain diverter
* Estimated stock levels as of Sat, Apr 11, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The 18-Inch x 17-Inch Black Slant Back Roof Vent is a durable, low-profile vent designed to provide reliable attic ventilation and weather protection for a wide range of homes. Constructed of high-impact plastic with UV inhibitors, it resists sun degradation while blending discreetly in black. The flashing measures 17 in x 18 in and fits roofs with pitches from 3/12 to 12/12, making it suitable for many common roof inclines. Each vent provides 61 square inches of net free area to help promote airflow, while the full screening and integrated rain diverter keep out pests and moisture. Use it to improve attic ventilation for cooler, drier spaces, to support balanced airflow for insulation performance, or when replacing an older slant-back vent on shingle or similar roofs where a compact, weather-resistant option is desired.
Specifications
General
| Color | Black |
|---|---|
| Color Family | Black / Gray |
| Material | High-Impact Plastic with UV Inhibitors |
| Net Free Ventilating Area | 61 square foot |
| Rough Opening Size | 9 in diameter |
| Type | Roof Vent |
Dimensions
| Length | 17 in |
|---|---|
| Width | 18 in |
