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Alpha 411BLANK RV Holding Tank - 37 Gallon Center Drain Black Water Storage
The Alpha 411BLANK holding tank delivers reliable 37-gallon black water storage capacity with center drain orientation and OEM-grade rotational molded construction. This 57" x 26" x 8" holding tank features seamless one-piece design, leak-tested quality assurance, and center drain configuration perfect for RVs with balanced dimensions and centered plumbing layouts.
Why Choose the Alpha 411BLANK Holding Tank?
Alpha's 411BLANK holding tank solves the challenge of replacing worn or damaged RV waste tanks with authentic OEM-quality construction. The 37-gallon capacity provides ample black water storage for extended trips, while the rotational molded seamless design eliminates weak points and potential leak areas found in welded tanks.
At 57" long, 26" wide, and 8" tall, this holding tank features a balanced footprint that maximizes capacity while maintaining a low-profile design. The moderate 8" height combined with the 26" width makes it ideal for a wide range of travel trailers and motorhomes. The center drain orientation provides balanced drainage and is ideal for RVs with centered plumbing configurations.
Key Features and Specifications
- Capacity: 37 gallons black water storage
- Dimensions: 57" length x 26" width x 8" height
- Drain Orientation: Center Drain
- Configuration: Blank (no pre-installed fittings)
- Construction: Rotational molded seamless one-piece design
- Material: High-density polyethylene (HDPE)
- Part Number: 411BLANK
- Manufacturer: Alpha
- Quality Testing: 100% leak-tested before shipping
- Grade: OEM quality - same tanks used in new RV builds
Perfect For These Applications
The 57" x 26" x 8" size with 37-gallon capacity and center drain makes the 411BLANK ideal for:
- Travel trailer black water tank replacement with center plumbing
- Class C motorhome waste tank upgrades
- Fifth wheel holding tank repairs
- Custom RV builds requiring 37-gallon capacity with center drain
- RV restoration projects with centered plumbing layouts
- Replacement for damaged or leaking holding tanks
- Applications requiring balanced dimensions
- Extended trip RVs needing reliable waste storage
Center Drain Orientation - What It Means
The 411BLANK features center drain orientation, which means the drain outlet is positioned in the center of the tank. This configuration offers several advantages:
- Balanced drainage from both sides of the tank
- Ideal for RVs with centered plumbing layouts
- Provides optimal flow and complete drainage
- Perfect for the balanced 57" x 26" footprint design
- Eliminates need for offset plumbing connections
Note: Professional installation recommended. You'll need to drill and install appropriate fittings, gaskets, and hardware based on your RV's plumbing system.
Balanced Design Profile
The 411BLANK features a balanced 57" x 26" x 8" profile that provides excellent capacity in a versatile footprint. This configuration offers several advantages:
- Moderate 8" height fits in most standard compartments
- 57" length provides good capacity without excessive dimensions
- 26" width offers balanced footprint
- Center drain works perfectly with balanced design
- Provides 37-gallon capacity in a space-efficient design
- Versatile dimensions fit a wide range of RV models
Compare Similar Alpha Holding Tanks
| Model | Capacity | Dimensions (L x W x H) | Drain Side | Part Number | Best For | View Details |
|---|---|---|---|---|---|---|
| 411BLANK | 37 Gallons | 57" x 26" x 8" | Center Drain | 411BLANK | Balanced dimensions, center plumbing | Current Product |
| 231BLANK | 37 Gallons | 54" x 17" x 11" | Left Drain | 231BLANK | Same capacity, tall narrow profile, left drain | View |
| VR26567HRBLANK | 34 Gallons | 56" x 26" x 7.25" | Right Drain | VR26567HRBLANK | Similar dimensions, right drain | View |
| VR40427HBLANK | 40 Gallons | 42" x 40" x 7" | Center Drain | VR40427HBLANK | Larger capacity, square footprint, center drain | View |
Helpful Tip: Center drain tanks like the 411BLANK provide balanced drainage and work perfectly with balanced footprint designs. Always verify your RV's drain location before ordering.
Installation and Compatibility
This holding tank ships as a blank unit requiring professional installation. You'll need to:
- Verify tank dimensions fit your compartment (57" L x 26" W x 8" H minimum)
- Verify center drain orientation matches your RV's plumbing layout
- Drill appropriate holes for drain outlet (center position), vent, and sensor fittings
- Install gaskets and threaded fittings with proper sealant
- Connect to existing RV plumbing system at center position
- Secure tank with appropriate mounting straps or brackets
- Test all connections for leaks before use
Professional installation strongly recommended. Improper installation can lead to leaks, odors, and system failures.
What Makes Alpha Holding Tanks Superior?
Alpha has built a reputation for engineering excellence in the RV industry. Their holding tanks feature:
- Rotational Molded Construction: Seamless one-piece design eliminates weak points and potential leak areas
- OEM Quality Standards: Same tanks used by major RV manufacturers in new builds
- 100% Leak Testing: Every tank is individually submerged and tested before shipping
- High-Density Polyethylene: Superior chemical resistance and durability for waste applications
- Center Drain Configuration: Balanced drainage ideal for centered plumbing systems
- Balanced Design Options: Versatile dimensions fit a wide range of RV models
- Blank Configuration Options: Complete flexibility for custom plumbing installations
- Strict Quality Control: Manufactured to meet all health and safety requirements
- Built for RV Life: Designed to withstand constant movement, vibration, and temperature changes
- Long Service Life: Durable construction provides years of reliable performance
Frequently Asked Questions
What is the capacity of the 411BLANK holding tank?
The Alpha 411BLANK holding tank has a 37-gallon capacity for black water storage. This provides ample waste storage for extended RV trips and reduces the frequency of dump station visits.
What does center drain orientation mean?
Center drain means the drain outlet is positioned in the center of the tank, providing balanced drainage from both sides. This configuration is ideal for RVs with centered plumbing layouts and works perfectly with the tank's balanced 57" x 26" footprint.
What are the dimensions of the 411BLANK?
The 411BLANK measures 57" long x 26" wide x 8" tall. Make sure to measure your RV's tank compartment carefully, allowing extra space for fittings, connections, and mounting hardware.
Is this tank leak-tested?
Yes, every Alpha 411BLANK holding tank is individually submerged and leak-tested before shipping. This rigorous quality control ensures you receive a reliable, problem-free tank ready for installation.
What does blank configuration mean?
Blank configuration means the tank has no pre-installed fittings. You have complete flexibility to drill and install drain outlets (at center position), vent fittings, and sensor ports exactly where your RV's plumbing system requires them.
Will this fit my travel trailer?
The 411BLANK fits RVs with tank compartments that accommodate 57" length x 26" width x 8" height, plus clearance for fittings and connections. Most importantly, your RV should have centered drain plumbing to be compatible with this center drain tank.
Do I need professional installation?
Yes, professional installation is strongly recommended. Installing a holding tank requires drilling precise holes, installing fittings with proper gaskets and sealant, connecting to plumbing systems, and thorough leak testing. Improper installation can lead to serious problems including leaks and odors.
How does this compare to the 231BLANK?
Both the 411BLANK and 231BLANK have 37-gallon capacity. The 411BLANK (57" x 26" x 8") has a wider, lower profile with center drain, while the 231BLANK (54" x 17" x 11") has a tall, narrow profile with left drain. Choose based on your RV's compartment shape and plumbing layout.
Authentic Alpha Parts from Elkhart RV Parts
When you order the 411BLANK from Elkhart RV Parts, you receive 100% authentic Alpha products backed by our commitment to quality. We are an authorized Alpha dealer, ensuring you receive genuine OEM-grade parts with full manufacturer quality standards.
Our team understands RV holding tank systems and can help you select the right tank size, drain orientation, and configuration for your specific application. Have questions about sizing, drain orientation, or compatibility? Use our AI Live Chat for expert product guidance and technical support.
Order Your Alpha 411BLANK Center Drain Holding Tank Today
Replace your worn or damaged RV holding tank with the reliable Alpha 411BLANK center drain holding tank. With 37-gallon capacity, center drain orientation, balanced dimensions, rotational molded construction, and 100% leak-tested quality, this holding tank delivers the OEM-grade performance you need for years of trouble-free RV adventures.
Ships via freight. Order now for fast delivery of your authentic Alpha holding tank.
| Width (inches) | 26 |
|---|---|
| Height (inches) | 8 |
| Length (inches) | 57 |
| Capacity (gallons) | 37 |
| Construction material | Rotational molded plastic |
- What is the capacity of the alpha holding tank? The Alpha holding tank has a capacity of 37 gallons.
- What are the dimensions of this holding tank? The holding tank measures 57 inches in length, 26 inches in width, and 8 inches in height.
- Is this holding tank durable for rv use? Yes, it is made with extra durable rotational molded construction designed to withstand the constant movement, vibration, and temperature changes experienced during RV travel.
- Does this tank meet health and safety standards? Yes, it meets all necessary quality and health standards for RV waste management.
- Is this holding tank compatible with new rv builds? Yes, these are authentic OEM parts used in new RV builds by major manufacturers, ensuring perfect compatibility and performance.
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.