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Alpha 45 Gallon RV Holding Tank - 221BLANK
Upgrade your RV's waste management system with the Alpha 221BLANK, a premium 45-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 dimensions of 53" x 29" x 9.5", this tank delivers maximum waste capacity for extended adventures while fitting standard RV compartments.
Why Choose the Alpha 221BLANK Holding Tank?
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.
Large 45 Gallon Capacity for Extended Trips
With 45 gallons of waste capacity, this tank provides ample storage for extended boondocking, dry camping, or long road trips without frequent dump station visits.
OEM Quality Standards
Built to original equipment manufacturer specifications, the 221BLANK meets strict health and safety standards and is individually leak-tested to ensure long-lasting performance.
Durable Polyethylene Resists Damage
Constructed from high-quality polyethylene, this tank resists corrosion, cracking, and damage from temperature changes, movement, and vibration.
Technical Specifications
- Part Number: 221BLANK
- Capacity: 45 gallons
- Dimensions: 53" Length x 29" Width x 9.5" Height
- Material: Rotational molded polyethylene
- Construction: Seamless one-piece design
- Tank Type: Holding tank (black water/gray water)
- Weight: 130 lbs (shipping weight)
- SKU: 221BLANK
- Manufacturer: Alpha Systems
- Quality: OEM Grade, individually leak-tested
Compare Alpha Holding Tanks - Find Your Perfect Size
Not sure if the 221BLANK is the right fit? Compare it with other Alpha holding tanks in the 32-45 gallon range to find the perfect match for your RV's waste management needs.
| Model | Capacity | Dimensions (L x W x H) | Best For | View Details |
|---|---|---|---|---|
| 221BLANK | 45 gallons | 53" x 29" x 9.5" | Current Product - Maximum capacity | You're here! |
| VR345175HBLANK | 45 gallons | 51" x 34" x 7.875" | Same capacity, right drain | View → |
| 148BLANK | 35 gallons | 54" x 32" x 7.5" | Slightly less capacity | View → |
| 207BLANK | 32 gallons | 54.25" x 28.25" x 6.625" | Compact option | View → |
Tip: Measure your existing tank compartment carefully before ordering. Consider both the tank dimensions and drain location to ensure proper fitment.
What's Included
- One (1) Alpha 221BLANK 45 Gallon Holding Tank
- OEM Grade Quality Certification
- Individual Leak Test Verification
- Manufacturer Documentation
Frequently Asked Questions
Will this tank fit my RV?
The 221BLANK is designed as a replacement for many OEM holding tanks with similar dimensions. Measure your existing tank compartment (53" x 29" x 9.5") and verify drain location before ordering to ensure proper fitment.
What's the difference between black water and gray water tanks?
The 221BLANK can be used for either black water (toilet waste) 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 221BLANK 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.
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!
| QAI Certification | REC 559-1 |
|---|---|
| Part number | 221BLANK |
| Capacity (gallons) | 45 |
| Dimensions (inches) | 53 x 29 x 9.5 |
| Lead time | |
| Best for | RV waste management upgrade |
- What is the capacity of the alpha 221blank holding tank? The Alpha 221BLANK holding tank has a capacity of 45 gallons.
- What are the dimensions of this holding tank? The holding tank measures 53 inches in length, 29 inches in width, and 9.5 inches in height.
- Is this holding tank durable enough for rv travel? 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 holding tank meet health and safety standards? Yes, the Alpha 221BLANK holding tank is manufactured to strict specifications to meet all necessary health and safety requirements for RV waste management.
- Are these tanks oem quality and compatible with new rv builds? Yes, these tanks 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.