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Alpha 29.5 Gallon RV Holding Tank - 260BLANK
Upgrade your RV's waste management system with the Alpha 260BLANK, a premium 29.5-gallon holding tank engineered to meet or exceed OEM standards. This rotational molded tank features seamless one-piece construction, superior durability, and leak-tested reliability. With ultra-narrow dimensions of 56" x 12" x 12", this tank delivers excellent waste capacity while fitting the tightest RV compartments, van conversions, and custom builds with extreme width constraints.
Why Choose the Alpha 260BLANK Holding Tank?
Ultra-Narrow 12-Inch Width for Extreme Space Constraints
With an ultra-narrow 12-inch width, the 260BLANK is the perfect solution for RVs, van conversions, and custom builds with severe lateral space limitations. The taller 12-inch height maximizes volume without requiring extra width.
Rotational Molded One-Piece Construction
Engineered without seams, joints, or weak points, this rotational molded tank delivers superior strength and leak-proof reliability that withstands the rigors of RV travel, movement, vibration, and temperature changes.
OEM Quality Standards
Built to original equipment manufacturer specifications, the 260BLANK meets strict health and safety standards and is individually leak-tested to ensure long-lasting performance.
Ideal for Van Conversions and Custom Builds
The 260BLANK's unique ultra-narrow profile makes it perfect for van conversions, custom RV builds, and retrofits where standard-width tanks won't fit.
Technical Specifications
- Part Number: 260BLANK
- Capacity: 29.5 gallons
- Dimensions: 56" Length x 12" Width x 12" Height
- Material: Rotational molded polyethylene
- Construction: Seamless one-piece design
- Tank Type: Holding tank (black water)
- SKU: 260BLANK
- Manufacturer: Alpha Systems
- Quality: OEM Grade, individually leak-tested
Compare Alpha Holding Tanks - Find Your Perfect Size
Not sure if the 260BLANK is the right fit? Compare it with other Alpha holding tanks in the 29-30 gallon range to find the perfect match for your RV's waste management needs and space constraints.
| Model | Capacity | Dimensions (L x W x H) | Best For | View Details |
|---|---|---|---|---|
| 260BLANK | 29.5 gallons | 56" x 12" x 12" | Current Product - Ultra-narrow width | You're here! |
| VB22548H | 30 gallons | 54" x 21.5" x 8" | Lower profile, wider | View → |
| 987BLANK | 30 gallons | 56" x 30" x 5.25" | Very low profile, wider | View → |
| VB23528HL | 30 gallons | 52" x 23" x 8" | Left drain, moderate dimensions | View → |
Tip: The 260BLANK's ultra-narrow 12-inch width makes it the narrowest 29+ gallon tank in the Alpha lineup, perfect for van conversions and extreme space constraints. If you have more width available, consider the VB22548H for a lower profile.
What's Included
- One (1) Alpha 260BLANK 29.5 Gallon Holding Tank
- OEM Grade Quality Certification
- Individual Leak Test Verification
- Manufacturer Documentation
Frequently Asked Questions
Will this tank fit my RV or van conversion?
The 260BLANK is designed for RVs, van conversions, and custom builds with extreme width constraints. Measure your existing tank compartment (56" x 12" x 12") and verify drain location before ordering to ensure proper fitment. The ultra-narrow 12-inch width is ideal for tight spaces.
What's the difference between black water and gray water tanks?
While the 260BLANK is designed primarily for black water (toilet waste), Alpha holding tanks can be used for either black or gray water (sink/shower drainage). The tank construction is identical - the designation depends on how it's plumbed in your RV system.
How long will this tank last?
With proper care and maintenance, Alpha holding tanks are built to last for many years, often outlasting the RV itself. The seamless rotational molded construction eliminates common failure points found in welded or multi-piece tanks.
Is this tank leak-tested?
Yes, every Alpha 260BLANK tank is individually leak-tested at the factory to ensure quality and reliability before shipping.
Can I install this tank myself?
While experienced RVers can install holding tanks, we recommend professional installation to ensure proper mounting, plumbing connections, and vent configuration for optimal performance and safety.
Is this tank suitable for van conversions?
Absolutely! The 260BLANK's ultra-narrow 12-inch width makes it one of the best choices for van conversions and custom builds where space is at a premium.
Why Buy from Elkhart RV Parts?
- 100% Authentic OEM Parts
- Fast Shipping
- 30-Day Return Policy
- Authorized Alpha Dealer
- Expert Customer Support
Questions? Use our AI Live Chat for expert guidance!
| Material | Rotational molded plastic |
|---|---|
| Width (inches) | 12 |
| Height (inches) | 12 |
| Length (inches) | 56 |
| Capacity (gallons) | 29.5 |
- What is the capacity of the alpha holding tank? The Alpha holding tank has a capacity of 29.5 gallons.
- What are the dimensions of this holding tank? The holding tank measures 56 inches in length, 12 inches in width, and 12 inches in height.
- Is this holding tank compatible with standard rvs? Yes, this holding tank uses authentic OEM parts and is the same high-quality tank used in new RV builds by major manufacturers, ensuring perfect compatibility.
- What materials and construction methods are used for this tank? The tank is made using extra durable rotational molded construction, creating a seamless, one-piece tank that provides superior strength and longevity.
- Has the tank been tested for leaks and quality? Yes, every tank is individually submerged and tested for leaks before shipping to guarantee a reliable and problem-free installation.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

