FEATURES & BENEFITS
• Single deflection radius mount spiral pipe grille with adjustable blades.• Blades are parallel to the shortest dimension.
• Allows for 2-way airflow.
• Nylon bushings on adjustable blades prevent metal on metal rattle.
• One piece curved frame with gasket fits flush to spiral pipe.
• Product sizes available to fit spiral pipe diameter 8" – 48". Spiral pipe diameter must be 4" larger than height of grille.