Zonon Exhaust Fan Roof Curb 19.5" Square x 20" High, 18 Gauge Galvanized Steel, Vented Bolt Together Flat Roof Curb

Features: Designed specifically for flat roof exhaust fan installations. Offers secure, stable support while meeting typical commercial and residential building requirements. Safely bears the load of roof-mounted exhaust fans through reinforced steel construction. Offers peace of mind through seasons of reliable performance in demanding conditions. Specifications: Material: 18 gauge galvanized steel Color: silver Size: 19.5" square x 20" high Package includes: 1 x Exhaust fan roof curb 19.5" Square x 20" High Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays

• Heavy-duty Support for Roof-mounted Fans: designed to properly support exhaust fan weight in roof-mounted applications; Measures 19.5" square x 20" high and includes all nuts and screws for straightforward DIY installation
• Wide Compatibility with 21" Base Fans: our exhaust fan roof curb is engineered for fans with a 21-inch square base, which fits for many popular models
• Durable 18 Gauge Galvanized Steel Build: the roof curb is constructed from heavy duty 18 gauge galvanized steel for good strength and rust resistance; Withstands heavy loads, impact, and compression without bending or warping
• Weather-resistant Long-lasting: zinc-plated finish offers full protection against rain, moisture, and harsh rooftop conditions, significantly outperforming standard materials in durability and service life
• Vented Design for Improved Airflow Efficiency: integrated ventilation openings promote natural attic air circulation when the fan is off, reducing heat buildup, saving energy, and extending the life of roof and fan