As an Amazon Associate, we earn from qualifying purchases. Monsoon 300mm Ext Weather Louvre (EWL300) National Ventilation . EWL300 Attributes Brand name, Manufacturer name, ManufacturerNational Ventilation Extra Product NameMonsoon 300mm Ext Weather Louvre (EWL300) extendedQty, qtyInStock0 moq, multiple1 MPNEWL300 originalCurrency{'currency': 'GBP'} qtySourceupdateFromUrlEntry snippetMonsoon 300mm Ext Weather Louvre (EWL300). Fast and Free Delivery Available. Trade Quality with Low Prices. Distributor offers SellerSKUMOQIn stockMultiplePrices Electrical2goEWL30011