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DB2 3" Coupling
3 in DB2 polyethylene push-fit coupling for underground electrical duct runs. Commonly used to join 3 in DB2 duct in concrete-encased installations; verify compatibility with the duct system and local utility or project specification before ordering.
What this product is for
This coupling is used to join 3 in underground electrical duct sections in DB2 duct bank work. It is intended for polyethylene push-fit connection in utility and site electrical conduit systems.
Use for
Use for connecting 3 in DB2 duct in underground runs, including concrete-encased duct banks where push-fit polyethylene couplings are specified. Suitable for utility, commercial, and institutional site servicing where DB2 duct is being installed.
Avoid for
Avoid using this coupling where a solvent-weld PVC coupling is specifically required, where the duct type does not match DB2, or where the project specification calls for a different manufacturer or certification. Do not assume interchangeability across all duct systems without confirming fit.
Best for
Best for electricians and underground contractors who need a simple push-fit connection on 3 in DB2 duct and want to maintain duct bank assembly speed on site.
Installed in
Installed in underground electrical duct runs, site services, utility duct banks, and concrete-encased conduit systems. For a 3 in trade size, this corresponds to approximately 75 mm.
Why this product exists
DB2 duct systems use dedicated fittings so installers can connect duct sections correctly without field improvisation. A push-fit polyethylene coupling helps speed assembly compared with solvent-weld methods where the specification allows it.
Compared with similar products
Compared with solvent-weld DB2 couplings, a push-fit polyethylene coupling can reduce installation steps because no solvent cement is required. Compared with general-purpose conduit fittings, this product is intended for DB2 underground duct applications and should be matched to the specified duct system.
Specifications
- Product type: Electrical duct coupling
- Trade size: 3 in (approximately 75 mm)
- Duct type: DB2
- Material: Polyethylene
- Connection style: Push-fit
- Application: Underground electrical duct
- Typical use: Concrete-encased ductwork where specified
- Part number: 3DB2COUP
- Brand: Unknown
Typical guidance only: DB2 fittings are commonly selected to match the exact duct type, size, and project standard. Actual performance depends on installation conditions, duct tolerances, and local electrical code or utility requirements.
- ApplicationUnderground electrical duct | Concrete-encased ductwork where specified
- MaterialPolyethylene
- Trade Size3 in (approximately 75 mm)
- Connection StylePush-fit
- BrandsWhite Label
Aptico Supply Delivery
Fast Electrical Supply Delivery Across Ontario
Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.

Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
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Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
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