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.

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