As an Amazon Associate, we earn from qualifying purchases. Monsoon Supertube 125 Flat Channel End Cap (518) National Ventilation . 518 Attributes Brand name, Manufacturer name, ManufacturerNational Ventilation Extra Product NameMonsoon Supertube 125 Flat Channel End Cap (518) extendedQty, qtyInStock0 moq, multiple1 MPN518 originalCurrency{'currency': 'GBP'} qtySourceupdateFromUrlEntry snippetMonsoon Supertube 125 Flat Channel End Cap (518). Fast and Free Delivery Available. Trade Quality with Low Prices. Distributor offers SellerSKUMOQIn stockMultiplePrices Electrical2go51811