{"id":10252,"date":"2026-03-19T16:39:37","date_gmt":"2026-03-19T14:39:37","guid":{"rendered":"https:\/\/vestelli-fi.kehityspalvelin.fi\/tuote\/vestelli-closed-tank-eko-12-m%c2%b3-fiberglass\/"},"modified":"2026-07-08T16:09:19","modified_gmt":"2026-07-08T13:09:19","slug":"vestelli-closed-tank-eko-12-m%c2%b3-fiberglass","status":"publish","type":"product","link":"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/vestelli-closed-tank-eko-12-m%c2%b3-fiberglass\/","title":{"rendered":"Vestelli Closed tank EKO 12 m\u00b3 fiberglass"},"content":{"rendered":"<div class=\"elementor-element elementor-element-4156a4f6 elementor-widget elementor-widget-text-editor\" data-id=\"4156a4f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-f4dcaa9\" data-id=\"f4dcaa9\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-7f1a4bd elementor-widget elementor-widget-heading\" data-id=\"7f1a4bd\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n<div class=\"elementor-widget-container\">\n<h3><strong>Vestelli Closed tank 12 m\u00b3 fiberglass for cottages and detached houses &#8211; a spacious and cost-effective solution<\/strong><\/h3>\n<p>Vestelli Closed tank 12 m\u00b3 fiberglass for cottages and detached houses offers a very spacious and environmentally friendly solution for storing wastewater. The large 12 m\u00b3 capacity is optimized for the emptying capacity of the most common sewage trucks (12\u201315 m\u00b3), \u200b\u200bwhich reduces the number of emptyings and reduces costs in the long term. By choosing this model, you save both money and nature, as the need to empty is 20% less often compared to a traditional 10 m\u00b3 closed tank.  <\/p>\n<h3><strong>Durable and reinforced fiberglass construction<\/strong><\/h3>\n<p>The tank is made of fiberglass that meets pressure class 2 requirements, which is resistant to long-term use and challenging conditions. The structure is designed to withstand normal installation up to a depth of 1.5 meters, so it is also well suited for sites where sewers run deep. The tank can be anchored securely with tow ropes or a separate anchoring fabric, and the delivery also includes a wireless full alarm to ensure worry-free use.  <\/p>\n<h3><strong>Long emptying intervals \u2013 less emissions and costs<\/strong><\/h3>\n<p>Thanks to its volume, the Vestelli Closed Tank 12 m\u00b3 significantly reduces the need for emptying. This means lower transport emissions, fewer operating costs and savings in emptying costs. Due to its large capacity, it is ideal for permanent homes, second homes and locations where water use is high. For cottage use, a smaller 5 m\u00b3 or 10 m\u00b3 tank is often sufficient, but 12 m\u00b3 brings clear savings in the long term.   <\/p>\n<h3><strong>Suitable for dual drainage and groundwater areas<\/strong><\/h3>\n<p>Vestelli Closed Tank 12 m\u00b3 can be connected as part of a dual sewer system, where toilet wastewater is directed to a closed tank and greywater is treated with a separate system, such as <strong><a href=\"\/en\/tuote-osasto\/wastewater-treatment-systems\/greywater-treatment-for-homes-and-holiday-properties\/\">Biopurifier 3.<\/a><\/strong> This combination offers a cost-effective and environmentally friendly solution even in areas with stricter regulations. The tank is also suitable for groundwater areas, where all wastewater can be safely directed to a closed tank without environmental impact.  <\/p>\n<h3><strong>Features<\/strong><\/h3>\n<ul>\n<li>Capacity: 10,000 liters<\/li>\n<li>Material: reinforced fiberglass, pressure class 2<\/li>\n<li>Dimensions: height 1600 mm, width 1600 mm, length 6200 mm<\/li>\n<li>Weight: 400 kg<\/li>\n<li>Maximum installation depth: 1.5 m<\/li>\n<li>Height of future drain: 1490 mm from the bottom of the tank, \u00d8 110 mm<\/li>\n<li>Drain pipe: 1 pc, \u00f8200 mm x 1 m, closed lid<\/li>\n<li>Warranty: 2 years<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div data-id=\"47e6f41\" data-element_type=\"column\">\n<div data-id=\"47e6f41\" data-element_type=\"column\">\n<p>Read more <strong><a href=\"\/en\/tuote-osasto\/wastewater-treatment-systems\/septic-tanks\/\">at vestelli.fi<\/a><\/strong><\/p>\n<\/div>\n<\/div>\n<h3><\/h3>\n<div data-id=\"47e6f41\" data-element_type=\"column\">\n<div data-id=\"47e6f41\" data-element_type=\"column\">\n<h3><strong>Documents<\/strong><\/h3>\n<\/div>\n<div data-id=\"47e6f41\" data-element_type=\"column\"><strong><a href=\"\/wp-content\/uploads\/2023\/01\/Vestelli-Lasikuitu-umpisailio-U10-U12-Asennus-kaytto-ja-huolto-ohje_FI_2022-2-9-1.pdf\" target=\"_blank\" rel=\"noopener\">Vestelli Fiberglass Closed Tank U10 U12 Installation, Operation and Maintenance Instructions (PDF)<\/a><\/strong><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Vestelli Closed tank 12 m\u00b3 fiberglass for cottages and detached houses offers a very spacious and environmentally friendly solution for storing wastewater. The large 12 m\u00b3 capacity is optimized for the emptying capacity of the most common sewage trucks (12\u201315 m\u00b3), \u200b\u200bwhich reduces the number of emptyings and reduces costs in the long term. By choosing this model, you save both money and nature, as the need to empty is 20% less often compared to a traditional 10 m\u00b3 closed tank.<\/p>\n<h4>The product delivery includes the following accessories:<\/h4>\n<ul>\n<li><strong>1 pc Vestelli wireless filling alarm<\/strong><\/li>\n<li><strong>2 pcs Vestelli anchoring fabric<\/strong><\/li>\n<\/ul>\n","protected":false},"featured_media":9982,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[137,136],"product_tag":[],"class_list":["post-10252","product","type-product","status-publish","has-post-thumbnail","product_cat-septic-tanks","product_cat-wastewater-treatment-systems","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vestelli Closed tank EKO 12 m\u00b3 fiberglass | Vestelli.fi<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vestelli Closed tank EKO 12 m\u00b3 fiberglass | Vestelli.fi\" \/>\n<meta property=\"og:description\" content=\"Vestelli Closed tank 12 m\u00b3 fiberglass for cottages and detached houses offers a very spacious and environmentally friendly solution for storing wastewater. The large 12 m\u00b3 capacity is optimized for the emptying capacity of the most common sewage trucks (12\u201315 m\u00b3), \u200b\u200bwhich reduces the number of emptyings and reduces costs in the long term. By choosing this model, you save both money and nature, as the need to empty is 20% less often compared to a traditional 10 m\u00b3 closed tank. The product delivery includes the following accessories: 1 pc Vestelli wireless filling alarm 2 pcs Vestelli anchoring fabric\" \/>\n<meta property=\"og:url\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/en\/tuote\/vestelli-closed-tank-eko-12-m%c2%b3-fiberglass\/\" \/>\n<meta property=\"og:site_name\" content=\"Vestelli.fi\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-08T13:09:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/vestelli-fi.kehityspalvelin.fi\/wp-content\/uploads\/2026\/03\/VESTELLI_UMPISAILIO_13012022_1_netti_square-e1756126717855.png\" \/>\n\t<meta property=\"og:image:width\" content=\"650\" \/>\n\t<meta property=\"og:image:height\" content=\"650\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script 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