Shimizu Hikari 150 x 450 Underfloor Ventilation Hole Opening and Closing Type

Openable, insect-proof, mold-proof, and improved home performance. Prevents underfloor moisture and reduces the growth of dust mites, mold, and termites. Highly airtight, humid Japanese homes require ample ventilation. Greatly improves home performance and earns the trust of clients. Exterior dimensions: 150 x 450 mm Effective ventilation area: 112 sq cm Material: Polystyrene resin