A 2-inch concentric vent kit routes an appliance’s intake and exhaust through one termination assembly, typically reducing the number of wall or roof openings. The DiversiTech CVENT-2 is a strong option when a low-profile design and stated 2-inch size are priorities. The Dakota Sourcing kit is aimed at water-heater installations where horizontal or vertical termination and a single opening matter. Rheem options may suit buyers seeking a Rheem-branded part, but confirm appliance compatibility and local-code approval before choosing.
| Product | Stated size or detail | Best suited for |
|---|---|---|
| Rheem Concentric Vent Kit | 2-inch; genuine factory-authorized part | Buyers seeking a Rheem OEM part |
| DiversiTech CVENT-2 | 2-inch; listed dimensions 7.75 × 34.75 × 6.75 inches | Low-profile installations |
| Dakota Sourcing 22152 | 2-inch; horizontal or vertical venting | Water-heater terminations |
| Wosijm SP20285 | For 2-inch PVC and ABS; 4-inch center-to-center | Installations needing stated pipe-material and spacing details |
| Rheem SP20265 | Listing gives package dimensions, not pipe size | Buyers checking a specific Rheem part number |
Rheem 2-Inch Concentric Vent Kit
This Rheem kit is identified as a 2-inch concentric vent kit and as an OEM genuine factory-authorized part. The listing says it is intended to simplify installation. That makes it a reasonable option for buyers who are matching a Rheem appliance or who specifically want a factory-authorized Rheem part rather than a broadly described alternative.
- Best for: Buyers who have confirmed that their appliance instructions call for this Rheem part and a 2-inch concentric termination.
- Why it was selected: It states the 2-inch size and OEM status directly, both useful selection details for a replacement or planned installation.
- Caution: The listing says this kit is not approved for use in Massachusetts and New York. Check local requirements and appliance documentation before purchase.
Do not treat the brand name or nominal pipe size alone as proof of compatibility. Confirm the appliance model’s venting instructions, allowable vent materials, termination requirements, and local code. If the appliance manufacturer specifies a different kit or configuration, use that direction instead.
DiversiTech CVENT-2 Low-Profile Kit
The DiversiTech CVENT-2 is listed as a 2-inch concentric kit for tankless gas water heaters and high-efficiency furnaces. Its stated dimensions are 7.75 × 34.75 × 6.75 inches. The product description highlights a dual-pipe arrangement and a low-profile design that conceals the intake and exhaust pipework at the termination.
- Best for: Buyers who want a clearly identified 2-inch kit with a low-profile exterior appearance.
- Why it was selected: The listing provides a nominal pipe size, named appliance categories, and overall dimensions for comparison and planning.
- Caution: Listed overall dimensions do not establish appliance compatibility or the permitted vent length. Check the appliance manual for required materials, clearances, and configuration.
The product description emphasizes proper ventilation for high-efficiency fossil-fuel appliances. That is a critical installation requirement, not a substitute for the appliance manufacturer’s venting instructions. Compare the CVENT-2’s dimensions with the available wall or roof space, and confirm that the termination style is allowed for the intended installation.
Dakota Sourcing 22152 PVC Kit
The Dakota Sourcing 22152 is described as a 2-inch PVC concentric vent termination kit for water heaters. The listing says it can be used for horizontal or vertical venting and that the concentric arrangement requires one opening rather than two. It also describes the kit as easy to assemble, though the appliance instructions should guide the actual installation.
- Best for: Water-heater buyers who need a 2-inch termination and are comparing horizontal with vertical placement.
- Why it was selected: Its listing identifies the diameter, intended appliance category, and two termination orientations.
- Caution: The listing names PVC, so do not assume that other vent materials are supported. Confirm material requirements and approval for the specific appliance.
A single opening may simplify layout compared with separate intake and exhaust penetrations, but the required opening size and location are not provided in the supplied product details. Check the installation instructions before cutting. Also verify that the appliance permits this termination arrangement and that the chosen orientation meets local requirements.
Wosijm SP20285 Horizontal Vent Kit
The Wosijm SP20285 is described as a horizontal vent termination kit for tankless gas water heaters and high-efficiency furnaces. Its listing says it is suitable for 2-inch PVC and ABS pipe, gives a 4-inch center-to-center measurement, and states that the kit can be installed horizontally through a wall or vertically through a roof.
- Best for: Buyers who need the listing’s stated 2-inch PVC or ABS pipe fit and want a specified center-to-center measurement for planning.
- Why it was selected: It provides more explicit pipe-material and spacing details than some of the other listings.
- Caution: The product description says to confirm pipe size before buying. Verify both material and appliance approval; a stated fit does not establish approval for every system.
The product is also described as a low-profile design intended to conceal intake and exhaust pipework. Although its name emphasizes horizontal termination, the description says vertical roof installation is also possible. Confirm the actual installation instructions and appliance requirements for the chosen orientation before proceeding.
Rheem SP20265 Concentric Vent Kit
The Rheem SP20265 is listed as a concentric vent kit. The available product details identify China as the country of origin and give package dimensions of 18 inches long by 18 inches wide. They do not state the pipe diameter, compatible appliance models, vent material, or permitted installation orientation.
- Best for: Buyers who are checking the SP20265 part number against a Rheem appliance manual or an existing installation.
- Why it was selected: It is a named Rheem concentric kit, making it relevant to buyers researching 2-inch kit options, but the listing’s specs are limited.
- Caution: The supplied listing information does not confirm that this kit is 2-inch. Do not order it as a 2-inch replacement unless the manufacturer documentation or seller confirms the size and compatibility.
The package dimensions are not the same as vent-pipe diameter or assembled kit dimensions. Use the exact part number to compare with the appliance’s approved parts list. If those documents do not identify SP20265 as the required kit, obtain confirmation before purchase rather than inferring specifications from the product name.
Buying Guide: How to Choose a 2-Inch Concentric Vent Kit
Does the appliance actually call for a 2-inch kit?
Start with the installation manual and appliance nameplate or model information. A kit’s nominal size must match the appliance’s venting requirements, but size alone is not enough to establish a suitable choice. The appliance manufacturer may specify an exact kit, vent material, termination arrangement, or allowable vent length. If the documentation calls for a different diameter, do not substitute a 2-inch kit based only on the opening already present.
Which pipe material is approved?
Check whether the appliance instructions allow the material named by the kit listing. The Wosijm listing specifies 2-inch PVC and ABS. The Dakota listing calls its product PVC. Other product descriptions may not provide enough material detail. Do not assume that PVC, ABS, or another material can be used interchangeably; follow the appliance manual and applicable local code.
Do you need a wall or roof termination?
Some listings describe both horizontal and vertical use, while a product name may emphasize one orientation. Confirm that the kit’s instructions support the location you plan to use. The placement of the intake and exhaust termination must comply with the appliance instructions and local requirements. Before cutting a wall or roof opening, verify the position, dimensions, clearances, and route with the installation documentation.
What dimensions should you compare?
Separate pipe diameter from overall kit dimensions. DiversiTech provides overall dimensions of 7.75 × 34.75 × 6.75 inches, while Wosijm gives a 4-inch center-to-center measurement. These figures describe different aspects of a product and cannot be compared as if they were the same specification. Check the clearance and layout details required for the installation, and seek missing measurements from the manufacturer or seller.
Is an OEM kit preferable?
An OEM part can be a useful choice when the appliance manufacturer identifies that exact part number for the appliance. The Rheem 2-inch kit in this comparison is described as a genuine factory-authorized part. Still, verify the appliance model and regional restrictions: its listing says it is not approved for use in Massachusetts and New York. A matching brand does not by itself prove compatibility.
How should you compare these options?
- Choose a kit with a clearly stated 2-inch size when the appliance documentation requires that diameter.
- Prioritize an exact approved part number when the appliance manual specifies one.
- Compare pipe material, orientation, dimensions, and termination requirements, not just brand or appearance.
- Confirm local-code acceptance and any state-specific restrictions before purchase.
- Ask for clarification when a listing omits diameter or compatibility details, as the SP20265 details do here.
Concentric venting combines intake and exhaust at one termination assembly, but it does not eliminate the need to follow appliance-specific venting rules. A qualified installer can help verify the part, placement, and code requirements when the manual or product details are unclear.
Frequently Asked Questions
What does a 2-inch concentric vent kit do?
It provides a termination arrangement for an appliance’s intake and exhaust using concentric pipework. The exact design and permitted use depend on the kit and appliance instructions.
Can any 2-inch kit fit a high-efficiency furnace?
No. Confirm the furnace manufacturer’s approved vent kit, required pipe material, diameter, vent length, and termination rules. A shared nominal diameter does not guarantee compatibility.
Can a concentric vent kit be installed through a roof?
Some product listings state that vertical roof installation is supported. Confirm that the specific kit and appliance instructions allow that orientation before installation.
Is the Rheem SP20265 confirmed as a 2-inch kit?
Not by the supplied product details. They identify it as a concentric vent kit and provide package dimensions, but do not state pipe diameter. Verify the size using Rheem documentation or seller confirmation.
What should I check before cutting a vent opening?
Verify the approved kit, opening and termination requirements, location, clearances, pipe material, and installation orientation in the appliance and kit instructions. Follow local code and use a qualified installer when needed.