As an Amazon Associate, we earn from qualifying purchases. Home » 3M » BT40 BREATHING TUBE, NEOPRENE RUBBER/VINYL, HEAVY-DUTY, 33 IN, FOR TR-300 SERIES PAPR 3M . BT40 Gallery Attributes Brand name, Manufacturer name, Manufacturer3M DimensionUnitinch Extra Product NameBREATHING TUBE, NEOPRENE RUBBER/VINYL, HEAVY-DUTY, 33 IN, FOR TR-300 SERIES PAPR UNSPSC46182002 Weight0.614 WeightUnitlbs length32.671875 length_AttribLength moq, multiple1 MPNBT40 originalCurrency{'currency': 'CAD'} qtyInStock0 SKUMMMBT40 width32.666666666666664 width_AttribWidth ItemBreathing Tube For Use WithSpeedglas 9100, TR-300 Series Length32 43/64 in ColourBlack System TypePAPR System SeriesSpeedglas MaterialRubber Width32 2/3 in StandardsNIOSH Approved Brand and Series3M Speedglas Distributor offers SellerSKUMOQIn stockMultiplePrices grainger.caMMMBT4011