As an Amazon Associate, we earn from qualifying purchases. Monsoon Grey 250mm Gravity Controlled Shutter (GS250) National Ventilation . GS250 Attributes Brand name, Manufacturer name, ManufacturerNational Ventilation Extra Product NameMonsoon Grey 250mm Gravity Controlled Shutter (GS250) extendedQty, qtyInStock0 moq, multiple1 MPNGS250 originalCurrency{'currency': 'GBP'} qtySourceupdateFromUrlEntry snippetMonsoon Grey 250mm Gravity Controlled Shutter (GS250). Fast and Free Delivery Available. Trade Quality with Low Prices. Distributor offers SellerSKUMOQIn stockMultiplePrices Electrical2goGS25011