{"product_id":"alpha-27-gallon-rv-holding-tank-46-x-22-x-8-5-138blank","title":"Alpha - 27 Gallon RV Holding Tank - 46\" x 22\" x 8.5\" - 138BLANK - OEM Grade Black Water Tank","description":"\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #1d9bf0; padding: 16px; margin-bottom: 16px;\"\u003e\u003cstrong style=\"color: #1d9bf0;\"\u003e✓ ElkhartRVParts.com - The Only Authorized Place for Alpha Systems\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #10b981; padding: 16px; margin-bottom: 24px;\"\u003e\u003cstrong style=\"color: #10b981;\"\u003e✓ 100% Verified Authentic OEM Grade Part\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cp\u003eFinding a reliable replacement holding tank for your RV shouldn't be a gamble with your investment. The Alpha 27 Gallon RV Holding Tank (138BLANK) delivers the same OEM-quality construction used by major RV manufacturers, ensuring a perfect fit and leak-free performance for years of worry-free travel.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e27 Gallon Capacity\u003c\/strong\u003e - Optimal size for mid-sized RVs and travel trailers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 46\" x 22\" x 8.5\" - Designed to fit standard RV compartments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotational Molded Construction\u003c\/strong\u003e - Seamless one-piece design eliminates weak points and potential leak areas\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlank Tank Design\u003c\/strong\u003e - Allows custom fitting placement for maximum installation flexibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Leak Tested\u003c\/strong\u003e - Every tank is individually submerged and pressure tested before shipping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV-Resistant Material\u003c\/strong\u003e - High-density polyethylene withstands temperature extremes and road vibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 138BLANK - Direct OEM replacement for Alpha Systems installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Alpha 27 Gallon Holding Tank?\u003c\/h2\u003e\n\u003cp\u003eWhen you're replacing a critical component like your RV holding tank, you need confidence that it will perform flawlessly. This Alpha 27 gallon holding tank is manufactured using the same rotational molding process and quality standards as original equipment, ensuring superior durability compared to aftermarket alternatives. The blank tank configuration gives you complete control over drain and fitting placement, making it compatible with virtually any RV waste system layout. Unlike cheaper alternatives that may crack or leak after a few seasons, this OEM-grade holding tank is built to withstand the constant movement, temperature fluctuations, and stress of full-time RV living.\u003c\/p\u003e\n\n\u003ch2\u003eCompare 27 Gallon RV Holding Tanks\u003c\/h2\u003e\n\u003cp\u003eNot sure which 27 gallon holding tank is right for your RV? Compare the Alpha 138BLANK with other popular models to find the perfect fit for your waste management system.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x: auto; margin: 20px 0;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e5e7eb;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #dc2626; color: white;\"\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eDimensions\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eCapacity\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eDrain Location\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eBest For\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left; border: 1px solid #e5e7eb;\"\u003eView Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #fef2f2; border-left: 3px solid #dc2626;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eAlpha 138BLANK\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e46\" x 22\" x 8.5\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e27 Gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eBlank (Custom)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eMaximum installation flexibility\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eCurrent Product\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eAlpha VR224685HBLANK\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e46\" x 22\" x 8.5\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e27 Gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eBlank (Custom)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eAlternative Alpha blank tank\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/alpha-27-gallon-rv-holding-tank-46x22x8-5-vr224685hblank\" style=\"color: #dc2626; text-decoration: none; font-weight: bold;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eMAKS 120023001\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e46\" x 22\" x 8.5\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e27 Gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eSide Right Hand\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003ePre-configured right drain\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/maks-holding-tank-22-x-46-x-8-5-27-gallons-side-right-hand-drain-blank-tank\" style=\"color: #dc2626; text-decoration: none; font-weight: bold;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eElkhart Plastics H1261003\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e33.5\" x 19\" x 12.75\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e27 Gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eBlank (Custom)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eCompact vertical design\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/rv-plumbingrv-holding-tanks27-gallon-rv-holding-tank-33-1-2-x-19-x-12-3-4\" style=\"color: #dc2626; text-decoration: none; font-weight: bold;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eICON HT186-ED\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e64\" x 20\" x 9\"\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e27 Gallons\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eEnd Drain\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eLong narrow spaces with sensors\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003ca href=\"https:\/\/elkhartrvparts.com\/products\/icon-holding-tank-ht186-ed-64x20x9-27-gallons\" style=\"color: #dc2626; text-decoration: none; font-weight: bold;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Measure your RV's holding tank compartment carefully before ordering. While capacity is important, the physical dimensions must fit your available space. Blank tanks offer the most flexibility for custom installations.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 27 Gallons (102 Liters)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 46 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 22 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 8.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-Density Polyethylene (HDPE)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction Method:\u003c\/strong\u003e Rotational Molding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall Thickness:\u003c\/strong\u003e Uniform throughout for maximum strength\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Lightweight for easy installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to 140°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Alpha Systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 138BLANK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain Configuration:\u003c\/strong\u003e Blank - allows custom fitting placement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Universal fit for RVs requiring 27 gallon holding capacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Alpha 27 Gallon Holding Tank (138BLANK)\u003c\/li\u003e\n\u003cli\u003eManufacturer Quality Guarantee\u003c\/li\u003e\n\u003cli\u003e100% Leak-Tested Certification\u003c\/li\u003e\n\u003cli\u003eInstallation-Ready Design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Fittings, drain valves, and mounting hardware sold separately. This blank tank allows you to customize fitting placement for your specific installation needs.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Models \u0026amp; Alternatives\u003c\/h2\u003e\n\u003cp\u003eLooking for related products or different configurations? Explore our complete selection of \u003ca href=\"https:\/\/elkhartrvparts.com\/collections\/holding-tanks\" style=\"color: #dc2626; font-weight: bold;\"\u003eRV holding tanks\u003c\/a\u003e including fresh water tanks, grey water tanks, and black water tanks in various capacities. Need a different size? Check out our \u003ca href=\"https:\/\/elkhartrvparts.com\/products\/alpha-30-gallons-holding-tank-56-x-30-x-5-1-4-987blank\" style=\"color: #dc2626; font-weight: bold;\"\u003e30 gallon holding tanks\u003c\/a\u003e or \u003ca href=\"https:\/\/elkhartrvparts.com\/products\/alpha-27-gallon-rv-holding-tank-46x22x8-5-vr224685hblank\" style=\"color: #dc2626; font-weight: bold;\"\u003ealternative 27 gallon models\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eHow do I install the Alpha 27 gallon holding tank in my RV?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires removing your old tank, positioning the new Alpha holding tank in the compartment, securing it with appropriate mounting straps or brackets, and connecting your drain fittings. Since this is a blank tank, you'll need to drill and install fittings in your desired locations. We recommend professional installation if you're not experienced with RV plumbing systems.\u003c\/p\u003e\n\n\u003ch3\u003eIs this holding tank compatible with my RV model?\u003c\/h3\u003e\n\u003cp\u003eThis 27 gallon holding tank fits any RV with a compartment measuring at least 46\" x 22\" x 8.5\". The blank design allows custom fitting placement, making it compatible with most RV waste systems. Measure your existing tank and compartment space before ordering to ensure proper fitment.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between a blank tank and a pre-configured tank?\u003c\/h3\u003e\n\u003cp\u003eA blank tank like the Alpha 138BLANK has no pre-drilled holes for fittings, giving you complete control over drain valve placement, vent locations, and sensor positioning. Pre-configured tanks have fittings already installed in specific locations. Blank tanks offer maximum flexibility but require you to install your own fittings.\u003c\/p\u003e\n\n\u003ch3\u003eHow long will this RV holding tank last?\u003c\/h3\u003e\n\u003cp\u003eWith proper care and maintenance, this OEM-grade Alpha holding tank should last 15-20+ years. The rotational molded construction and UV-resistant HDPE material are designed to withstand the harsh conditions of RV travel including temperature extremes, road vibration, and chemical exposure from waste treatment products.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the weight capacity of the Alpha 27 gallon holding tank?\u003c\/h3\u003e\n\u003cp\u003eAt full capacity, this tank holds 27 gallons of waste, which weighs approximately 225 pounds (water weighs about 8.34 lbs per gallon). The tank itself is designed to safely contain this weight plus additional stress from road travel. Always ensure your RV's mounting system can support the full weight.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use this tank for fresh water instead of waste water?\u003c\/h3\u003e\n\u003cp\u003eWhile this tank is manufactured from food-grade HDPE material, it is specifically designed and marketed as a holding tank for waste water (black or grey water). For fresh water storage, we recommend purchasing a tank specifically designated for potable water to ensure NSF certification and proper sanitary standards.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Elkhart RV Parts?\u003c\/h2\u003e\n\u003cp\u003eAs an authorized dealer of Alpha Systems products, we guarantee 100% authentic OEM-grade parts backed by manufacturer warranties. Every holding tank is individually leak-tested before shipping, and our expert team is available to answer technical questions about fitment and installation. We understand the importance of reliable RV components and stand behind every product we sell with fast shipping, secure packaging, and a commitment to your satisfaction.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #dc2626; padding: 16px; margin-top: 24px;\"\u003e\n\u003cp style=\"margin: 0; font-weight: bold; color: #dc2626;\"\u003eReady to upgrade your RV's waste management system? Order your Alpha 27 gallon holding tank today and enjoy peace of mind with OEM-quality construction. Questions about fitment or installation? Our AI Live Chat is here to help!\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Alpha","offers":[{"title":"Default Title","offer_id":46367885983896,"sku":"138BLANK","price":347.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/138BLANK_1.jpg?v=1742405741","url":"https:\/\/elkhartrvparts.com\/en-ca\/products\/alpha-27-gallon-rv-holding-tank-46-x-22-x-8-5-138blank","provider":"Elkhart RV Parts","version":"1.0","type":"link"}