{"product_id":"alpha-18-gallon-rv-fresh-water-tank-45x30x6-5-vr304565wblank","title":"Alpha - 18 Gallon RV Fresh Water Tank - 45\" x 30\" x 6 1\/2\" - VR304565WBLANK - FDA Approved Blank Tank","description":"\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #1d9bf0;padding:16px;margin-bottom:12px;\"\u003e\u003cstrong style=\"color:#1d9bf0;\"\u003e✓ ElkhartRVParts.com - The Only Authorized Place for Alpha Systems\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #10b981;padding:16px;margin-bottom:20px;\"\u003e\u003cstrong style=\"color:#10b981;\"\u003e✓ 100% Verified Authentic OEM Grade Part\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cp\u003eWhen your RV's fresh water system needs a reliable, long-lasting tank, the \u003cstrong\u003eAlpha 18 Gallon RV Fresh Water Tank VR304565WBLANK\u003c\/strong\u003e delivers OEM-grade performance in a uniquely flat, wide-footprint design. At just 6 1\/2\" deep with a 45\" x 30\" base, this tank fits where taller tanks simply can't — making it the go-to solution for under-floor RV bays, horse trailers, and marine applications with tight vertical clearance.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 18 gallons of potable fresh water storage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 45\" x 30\" x 6 1\/2\" — ultra-low-profile design for tight-clearance installs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e VR304565WBLANK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e FDA-approved, food-grade polyethylene — safe for drinking water\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Seamless one-piece rotational molding — zero seams, zero leak points\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFittings:\u003c\/strong\u003e Blank tank (no pre-drilled holes) — fully customizable for your plumbing layout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Stain, corrosion, and rust resistant — built for years of reliable service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 52.86 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e RVs, travel trailers, motorhomes, horse trailers, marine vessels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose the Alpha VR304565WBLANK?\u003c\/h2\u003e\n\u003cp\u003eMost factory-installed RV fresh water tanks are adequate at best. The \u003cstrong\u003eAlpha 18 gallon RV fresh water tank VR304565WBLANK\u003c\/strong\u003e is engineered to exceed OEM standards — not just meet them. Its seamless rotational-molded construction eliminates the weak points that cause leaks in lesser tanks, while the FDA-approved polyethylene ensures every drop of water stored is safe for drinking.\u003c\/p\u003e\n\u003cp\u003eThe blank tank design gives you complete control over your plumbing configuration. Whether you're doing a direct OEM replacement or a custom install, you drill your own fittings exactly where your system requires. No compromises, no adapters.\u003c\/p\u003e\n\u003cp\u003eThe low-profile 6 1\/2\" depth is the standout feature of this \u003cstrong\u003eAlpha fresh water tank\u003c\/strong\u003e — it slides into under-floor bays and compartments where standard tanks won't fit, making it a favorite for slide-in replacements on older RVs and custom horse trailer builds.\u003c\/p\u003e\n\n\u003ch2\u003eCompare Alpha Fresh Water Tanks\u003c\/h2\u003e\n\u003cp\u003eNot sure if the 18-gallon is the right size for your rig? Compare the full Alpha lineup to find your perfect fit:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background:#dc2626;color:#fff;\"\u003e\n      \u003cth style=\"padding:10px;border:1px solid #e5e7eb;text-align:left;\"\u003eModel (Part #)\u003c\/th\u003e\n      \u003cth style=\"padding:10px;border:1px solid #e5e7eb;text-align:left;\"\u003eCapacity\u003c\/th\u003e\n      \u003cth style=\"padding:10px;border:1px solid #e5e7eb;text-align:left;\"\u003eDimensions (L x W x H)\u003c\/th\u003e\n      \u003cth style=\"padding:10px;border:1px solid #e5e7eb;text-align:left;\"\u003eBest For\u003c\/th\u003e\n      \u003cth style=\"padding:10px;border:1px solid #e5e7eb;text-align:left;\"\u003eView Details\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-left:3px solid #dc2626;background:#fef2f2;\"\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eVR304565WBLANK\u003c\/strong\u003e ⬅ This Tank\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e18 Gallons\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e45\" x 30\" x 6 1\/2\"\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003eUltra-low-profile under-floor installs\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e—\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003e384BLANK\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e10 Gallons\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e17\" x 14\" x 9.5\"\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003eSmall RVs, truck campers, pop-ups\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/en-ca\/products\/alpha-10-gallon-rv-fresh-water-tank-17x14x9-5-384blank\" style=\"color:#dc2626;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003e385BLANK\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e16 Gallons\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e24\" x 15.5\" x 10.5\"\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003eStandard RV replacement, compact bays\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/en-ca\/products\/alpha-16-gallon-rv-fresh-water-tank-24x15-5x10-5-385blank\" style=\"color:#dc2626;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eVR182611WBLANK\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e22 Gallons\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e26.5\" x 18\" x 11\"\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003eTravel trailers, motorhomes, marine\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/en-ca\/products\/alpha-22-gallon-rv-fresh-water-tank-vr182611wblank-fda-approved\" style=\"color:#dc2626;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003cstrong\u003eVR17449WBLANK\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e26 Gallons\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e44\" x 17\" x 9\"\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003eMotorhomes, horse trailers, off-grid\u003c\/td\u003e\n      \u003ctd style=\"padding:10px;border:1px solid #e5e7eb;\"\u003e\u003ca href=\"\/en-ca\/products\/alpha-26-gallon-rv-fresh-water-tank-44x17x9-vr17449wblank\" style=\"color:#dc2626;\"\u003eView →\u003c\/a\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:13px;color:#6b7280;margin-top:8px;\"\u003e💡 \u003cem\u003eTip: When choosing a tank, always measure your available bay space (length, width, AND height clearance) before ordering. The VR304565WBLANK's 6 1\/2\" height makes it ideal when vertical space is the limiting factor.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 18 gallons (68.1 liters)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 45\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 30\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 6 1\/2\" (6.5\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight (empty):\u003c\/strong\u003e 52.86 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e VR304565WBLANK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e FDA-approved food-grade polyethylene\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturing Method:\u003c\/strong\u003e Rotational molding (seamless one-piece)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFittings:\u003c\/strong\u003e None pre-installed (blank tank)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Natural\/White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e FDA-approved for potable water storage\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e RV, travel trailer, motorhome, horse trailer, marine vessel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Alpha 18 Gallon Fresh Water Tank (VR304565WBLANK)\u003c\/li\u003e\n  \u003cli\u003eBlank tank — no fittings pre-installed (drill your own to match your plumbing)\u003c\/li\u003e\n  \u003cli\u003eManufacturer warranty against defects in materials and workmanship\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Models \u0026amp; Related Products\u003c\/h2\u003e\n\u003cp\u003eLooking for a different size or a tank with pre-installed fittings? Browse the full Alpha fresh water tank lineup:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-ca\/products\/alpha-10-gallon-rv-fresh-water-tank-17x14x9-5-384blank\" style=\"color:#dc2626;\"\u003eAlpha 10 Gallon RV Fresh Water Tank - 384BLANK\u003c\/a\u003e — compact option for small rigs\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-ca\/products\/alpha-16-gallon-rv-fresh-water-tank-24x15-5x10-5-385blank\" style=\"color:#dc2626;\"\u003eAlpha 16 Gallon RV Fresh Water Tank - 385BLANK\u003c\/a\u003e — popular mid-size replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-ca\/products\/alpha-22-gallon-rv-fresh-water-tank-vr182611wblank-fda-approved\" style=\"color:#dc2626;\"\u003eAlpha 22 Gallon RV Fresh Water Tank - VR182611WBLANK\u003c\/a\u003e — step up in capacity\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/en-ca\/products\/alpha-26-gallon-rv-fresh-water-tank-44x17x9-vr17449wblank\" style=\"color:#dc2626;\"\u003eAlpha 26 Gallon RV Fresh Water Tank - VR17449WBLANK\u003c\/a\u003e — wide flat profile, more capacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs the VR304565WBLANK safe for drinking water storage?\u003c\/strong\u003e\u003cbr\u003eYes. This tank is made from FDA-approved food-grade polyethylene, making it fully certified for potable (drinking) water storage in RVs, trailers, and marine applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this tank come with fittings pre-installed?\u003c\/strong\u003e\u003cbr\u003eNo — this is a blank tank with no pre-drilled holes or fittings. This gives you full flexibility to drill and install fittings exactly where your plumbing system requires.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I install the Alpha VR304565WBLANK in my RV?\u003c\/strong\u003e\u003cbr\u003eMeasure your bay opening to confirm the 45\" x 30\" x 6 1\/2\" dimensions fit. Drill your inlet, outlet, and vent holes using a hole saw sized for your fittings, install tank fittings with appropriate sealant, and connect to your existing plumbing lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat RV brands is this tank compatible with?\u003c\/strong\u003e\u003cbr\u003eThis is a universal blank tank compatible with any RV, travel trailer, motorhome, horse trailer, or marine vessel that can accommodate its 45\" x 30\" x 6 1\/2\" footprint. Always verify your bay dimensions before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is the VR304565WBLANK so flat compared to other 18-gallon tanks?\u003c\/strong\u003e\u003cbr\u003eThe wide 45\" x 30\" base spreads the 18-gallon capacity across a large, shallow footprint — ideal for under-floor bays with limited vertical clearance. If you have more height available, the 22-gallon VR182611WBLANK may offer a better fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere can I buy an authentic Alpha VR304565WBLANK?\u003c\/strong\u003e\u003cbr\u003eElkhartRVParts.com is an authorized Alpha Systems dealer. Purchasing here guarantees you receive a genuine OEM-grade part backed by the manufacturer's warranty.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f3f4f6;border-left:4px solid #dc2626;padding:16px;margin-top:24px;\"\u003e\n  \u003cstrong style=\"color:#dc2626;\"\u003eReady to order or have a fitment question?\u003c\/strong\u003e\u003cbr\u003e\n  Our AI Live Chat is available 24\/7 to help you confirm compatibility, check dimensions, and get your order placed quickly. Don't guess — get the right tank the first time.\n\u003c\/div\u003e","brand":"Alpha","offers":[{"title":"Default Title","offer_id":46367872745624,"sku":"VR304565WBLANK","price":364.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/VR304565W.jpg?v=1742403003","url":"https:\/\/elkhartrvparts.com\/en-ca\/products\/alpha-18-gallon-rv-fresh-water-tank-45x30x6-5-vr304565wblank","provider":"Elkhart RV Parts","version":"1.0","type":"link"}