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The H3925 RV holding tank is a verified ICON replacement tank built for RV black or gray water storage where the exact 56" x 36" x 5.5" footprint and black/gray water layout matter. This 33 gallons tank helps you match the original installation more confidently while staying with OEM-grade construction and real product specs.
Features & Specifications
- Part number: H3925
- Capacity: 33 Gallons
- Overall dimensions: 56" x 36" x 5.5"
- Drain / configuration: black/gray water
- Built for RV waste or holding tank replacement applications
- OEM-grade ICON construction with verified live-store specs
Why Choose H3925?
If you need a 33 gallons RV holding tank, the biggest win is matching the tank footprint and drain layout before you order. The H3925 makes that easier with a clearly identified part number, verified dimensions, and a format that fits common replacement searches for RV black-water and gray-water tank service.
Compare RV Holding Tanks
Not sure which RV holding tank is right for your setup? Compare capacity, footprint, and drain layout before you buy.
| Model | Capacity | Dimensions | Best For | View Details |
|---|---|---|---|---|
| H3925 | 33 Gallons | 56" x 36" x 5.5" | wide low-profile black or gray water tank replacement | Current Product |
| HT192B-ED | 39 Gallons | 70" x 24" x 8" | Mid-size center end drain waste tank replacement | View Details |
| HT192-ED | 54 Gallons | 70" x 24" x 11" | Higher-capacity center end drain waste tank replacement | View Details |
| HT706-ED | 15 Gallons | 46.5" x 16.5" x 8" | Smaller waste tank footprint alternative | View Details |
Tip: Match capacity, overall dimensions, and the exact drain position first. Small layout differences matter more than marketing wording.
Technical Specifications
- Brand: ICON
- Model: H3925
- Tank type: RV holding tank
- Dimensions: 56" x 36" x 5.5"
- Capacity: 33 Gallons
- Configuration: black/gray water
What's Included
Preinstalled sensors when shown in current product details.
Compatible Models & Alternatives
Compare this tank with other verified ICON holding tank options for similar capacities and footprints, including HT192B-ED, HT192-ED, and HT706-ED when you need a different size or drain layout.
Frequently Asked Questions
Is the H3925 the right RV holding tank for my application?
Match the part number, capacity, dimensions, and drain layout to your original tank before ordering.
Can this ICON tank be used for black or gray water?
These ICON waste and holding tank listings are written for RV replacement applications where black-water or gray-water storage is required, but you should still confirm your original setup.
Why do the dimensions matter so much on an RV waste tank?
Even small dimensional differences can affect fit, drain alignment, and clearance around mounting points or surrounding components.
Does this product include fittings or sensors?
Only the fittings, sensors, spigots, or valve details verified on the live product page should be treated as included.
Why Buy from Elkhart RV Parts?
Elkhart RV Parts focuses on verified RV replacement parts with factual listings, clear part identification, and live-store comparisons that help you avoid ordering the wrong tank.
Use AI Live Chat for a faster way to compare verified RV holding tank options before you order.
| QAI Certification | REC 559-1 |
|---|---|
| Part number | H3925 |
| Capacity (gallons) | 33 |
| Dimensions (inches) | 56 x 36 x 5.5 |
| Lead time | |
| Best for | Class A motorhomes and fifth wheels |
- What are the dimensions of the icon h3925 holding tank? The dimensions of the ICON H3925 holding tank are 56 inches by 36 inches by 5.5 inches.
- What is the capacity of this holding tank? This holding tank has a capacity of 33 gallons.
- Is this holding tank suitable for both black and gray water? Yes, the ICON H3925 holding tank can be used for black water, gray water, or a combination of both.
- Does the tank come with preinstalled fittings? Most ICON tanks, including this model, have a preinstalled drain and level sensors. Please check the product images to confirm the fittings.
- Is the icon holding tank durable and built to last? Yes, the ICON holding tank is made with a thicker amount of material for a stronger build and is certified to IAPMO and CSA standards, ensuring durability and reliability.
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.