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</html><thumbnail_url>https://vestelli-fi.kehityspalvelin.fi/wp-content/uploads/2026/03/Sadevesien-viivytyssailio-1800.jpg</thumbnail_url><thumbnail_width>1076</thumbnail_width><thumbnail_height>1086</thumbnail_height><description>The retention tank is lightweight and easy to install. The tank is installed in the inlet pipe from gutters and rainwater wells. You can transport the lightweight retention tank to your property, even on a passenger car trailer.</description></oembed>
