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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
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Description
2 in. / 4 in. x 39 in. Plastic Condensing Vent Pipe Extension KitPrecisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Venting, up to 8 tankless water heater units share the same vent system. This allows for significantly fewer wall or roof cuts, less labor, and longer vent lengths than ever possible with single unit tankless water heater venting. California residents see Prop 65 WARNINGS Concentric venting reduces install
Precisely engineered accessories can add even more reliability, convenience and flexibility to Rinnai Tankless Water Heaters. With Rinnai Common Venting, up to 8 tankless water heater units share the same vent system. This allows for significantly fewer wall or roof cuts, less labor, and longer vent lengths than ever possible with single-unit tankless water heater venting.- California residents
- Concentric venting reduces install time and costs
- Water heater accessories
- Easy assembly/adjustment
- Concentric venting allows for secure connection
- 2 in. / 4 in. condensing vent pipe extension 39 in.
- For use with Sensei Se+ tankless water heaters (condensing) and m-series boilers
- White finish
- Package quantity: 1
- Plastic construction
- 1-year limited warranty
- *Note. Rinnai is changing the language in its warranty terms and conditions found in the current User Installation manuals. The existing statement will be replaced by the following: “This Limited Warranty applies only to products that are installed in the United States and Canada. Improper installation may void this Limited Warranty. It is recommended that a trained and qualified professional who has attended a Rinnai installation training class complete your installation.” All warranties (old or new manual) will be honored as written above.
Features
| Item Weight | 2.83 |
| Includes | No Additional Items Included |
| Product Weight (lb.) | 2.83 |
| Pack Size | 1 |
| Finish Family | White |
| Returnable | 180-Day |
| Vent Part Type | Straight Vent |
| Material | Plastic |
| For Use With | Gas Tankless |
| Product Height (in.) | 4.33 |
| Product Width (in.) | 4.52 |
| Product Depth (in.) | 39.76 |
| Manufacturer Warranty | 1 Year limited warranty |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Pleasant taste, nice texture.
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Works well in my afternoon smoothie. Pleasant vanilla taste.
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Reviewed in the United States on March 16, 2026
★★★★★ 5
Sublingual works well for melatonin!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Sublingual seems to be the way to go with melatonin. It works well for me. It’s great this company offers a variety of doses. I was doing 10mg but I learned it might not good to stay on that high a dose for an extended period of time. So I switched to 5mg and it still works well.
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Reviewed in the United States on January 21, 2025
★★★★★ 5
Use for sleeping
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Great little pill for sleeping. No after taste, place under tongue and quickly dissolves.
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Reviewed in the United States on June 27, 2024
★★★★★ 5
A peaceful nights sleep always!!!
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Sleep peacefully, undisturbed, wake up refreshed. None habit forming.
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Reviewed in the United States on April 24, 2026
★★★★★ 4
Works
Size: 60 Count (Pack of 1), Style: Melatonin 5mg
Been taking these for years.. They work although sometimes I think they flare up my heartburn
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Reviewed in the United States on October 25, 2025