Solid steel construction floor vent with durable epoxy powdercoat finish. Pattern is stamped from a thick steel plate an is stronger than traditional louvered floor vents. ABS damper that wont rattle or rust Twin blades for maximum air flow Hidden and recessed lever Neck size is approx. 150x350mm. Face size is approx. 190x390mm (rim around vent is approx. 20mm)