Feature Premium materials: Stainless steel material, has the advantages of safety, corrosion resistance, wear resistance, etc. Noise reduction and air tightness: the exhaust pipe has a good noise reduction effect, which can effectively reduce noise. which allows the exhaust support heater to be better attached to ensure a perfect seal. Applycation: Suitable for auxiliary air heaters, auxiliary air heaters, car air additive heaters and generator exhaust Specifications:Material: Stainless steel + PlasticExhaust silencer: hole diameter: 24mm;Filter hole diameter: 25 mmExhaust pipe: 0.6M/1.2M/2M/3M Package includes:1 x 24 mm exhaust silencer,1 x 25 mm filter,1 x 24 mm exhaust pipe,1 x 25 mm air intake pipe,4 x clamps,3 x screws,1 x bracket Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.