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Black flexible PVC coupling, cylindrical with ribbed ends

Fernco Inc.

Fernco Inc. 1056-44 Flexible Coupling 4" x 4" trap

SKU CH-TA08-Q97TG

Connects 4" plastic pipe to 4" plastic pipe with a flexible elastomeric PVC coupling measuring 4.45" x 4.45" x 4.20"

  • Product typeDrain Components
  • Main materialElastomeric PVC
  • Durable elastomeric PVC resists corrosion and cracking
  • Flexible 4.20 in length accommodates pipe misalignment
  • Connects 4.45 in ID plastic pipe to 4.45 in ID plastic pipe
  • Model 1056-44 ensures correct fit for 4 in drain systems
  • New condition guarantees full material integrity out of the box

Product identity

The Fernco 1056-44 is a flexible elastomeric PVC coupling designed to join two 4-inch plastic pipes. It serves residential and light-commercial drainage installations where a watertight, corrosion-resistant joint is required.

Practical limits

The coupling accepts pipes with an inside diameter of 4.45 inches on each side and provides an overall length of 4.20 inches. It is rated for plastic-to-plastic connections only and carries no stated pressure rating or schedule classification.

Installation notes

The flexible PVC body slides over pipe ends and seals with standard stainless-steel clamps. Leaks typically occur when clamps are not tightened evenly or when pipe ends are cut unevenly, preventing full contact inside the coupling.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 92% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameFernco
Product typeDrain Components
Size & build
Main materialElastomeric PVC

Questions about this item

Should I choose the 1056-44 coupling for a 4" plastic drain line?

Yes, the 1056-44 is sized for 4" x 4" plastic-to-plastic connections and fits 4.45" inside diameters on both ends.

What does the 4.20" length mean when the coupling is installed?

The 4.20" dimension is the end-to-end installed length, so it occupies that much space between the two pipe ends.

How does the elastomeric PVC material affect the joint seal?

The flexible PVC conforms to the 4.45" pipe interiors and uses stainless steel clamps to create a watertight seal without rigid fittings.

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