Rinnai Universal Recess Box RGB-20-U
- Authorized Online Dealer
- Free Shipping (exclusions may apply)
- We Beat The Lowest Price
- Fast 4–7 Day Delivery
- Manufacturer Warranty Included
- Questions? Call Our Experts: +1 (800) 484-0224
Rinnai Universal Recess Box RGB-20-U is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Price Match Guarantee
Price Match Guarantee
We work very hard to ensure that we offer the absolute best prices online. If you find another online store that offers a lower price than us, let us know and we beat the price hands down. We want you to feel confident that you are getting the absolute best price for the product you are ordering.
Our 100% Price Match Guarantee has the following restrictions:
Promotions such as rebates and buy one, get one free offers are not eligible
The website can not be a discounter or auction website (ie; eBay, etc..)
The competitor must be an Authorized Retailer of the item you have purchased
The Price Match Guarantee includes will be calculated based on item price, sales tax, shipping charges
Price Matches Do Not Apply For Exchange Orders, or replacements
Please Note: Some Exclusions May Apply
Delivery and Shipping
Delivery and Shipping
Your order processing time is 1 to 2 days. Please note that the cut-off time for order placement is 6 p.m. Orders received after this time will be processed on the following business day.
Your order will arrive within 4 to 7 days on average (free shipping over $200). Shipping for orders under $200 incurs a flat fee of $15. We currently offer shipping only within the continental United States (island deliveries may incur additional costs); international shipping is not available.
Mostly all of our orders are shipped via one of our third-party freight carriers (18-wheeler). If your order has an item that is shipped on a freight carrier, you will be contacted to schedule a curbside delivery time. Please make sure to put the correct phone number at checkout.
Upon placing your order, you will receive a confirmation e-mail. This message will confirm your order has been received by our system, and your credit card was approved for purchase. We will not charge your card until the item has shipped unless it's back ordered and we need to hold an item for you.
As soon as your order is received on our end, we process it!
• Authorized Online Dealer
• Free Shipping + No Sales Tax (exclusions may apply)
• We Beat The Lowest Price
• Fast 4-7 Day Delivery
• Manufacturer Warranty Included
• Questions? Call Our Experts: +1 (800) 484-0224
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Description
Description
Rinnai Universal Recess Box RGB-20-U is designed for a seamless, professional installation of Rinnai tankless water heaters. This recessed box provides a sleek, finished appearance, allowing your water heater to sit flush against the wall for a neat, space-saving design.
Built with durable, weather-resistant materials, the Rinnai Universal Recess Box protects the unit’s components from outdoor elements while maintaining easy access for service and maintenance. Ideal for both residential and commercial applications, it ensures long-term reliability and superior protection for your investment.
Key Features:
- Universal Compatibility: Designed to fit most Rinnai tankless water heater models.
- Weather-Resistant Build: Protects against rain, dust, and outdoor conditions.
- Clean Installation: Provides a flush-mounted appearance for modern exteriors.
- Durable Construction: Made from heavy-duty galvanized steel for lasting strength.
- Easy Access Panel: Simplifies servicing and maintenance without dismounting.
-
Enhanced Safety: Shields gas and water connections for safer installations.
What’s Included
- 1 × Rinnai Universal Recess Box (Model: RGB-20-U)
- Mounting Hardware
- Installation Guide
Specifications:
| Specification | Details |
|---|---|
| Brand | Rinnai |
| Model Number | RGB-20-U |
| Product Type | Universal Recess Box |
| Material | Galvanized Steel |
| Finish | Powder-Coated |
| Compatibility | Fits Rinnai Tankless Water Heaters |
| Installation Type | Recessed Wall Mount |
| Dimensions (H × W × D) | 26.0" × 16.0" × 8.0" (approx.) |
| Weight | 5.5 lbs (approx.) |
| Weather Resistance | Yes |
| Warranty | Manufacturer’s Limited Warranty |
Care & Maintenance Instructions
- Inspect the exterior regularly for dirt or debris buildup.
- Clean using a damp cloth and mild detergent; avoid abrasive cleaners.
- Check mounting screws and seals annually to ensure stability.
- Keep ventilation openings clear of obstructions.



