Eastman 35389 1-1/2" Tubular W...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
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Eastman 35389 1-1/2" Tubular Waste Arm, 15" Drain Extension

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Model: 35389

In Stock (leaves warehouse same day if ordered before 3pm ET)

$3.74
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Eastman 35389 1-1/2" Waste Arm, 15" Tubular Drain Extension

The Eastman 35389 is a 1-1/2" waste arm measuring 15" in length, designed for use in tubular drain assemblies beneath sinks and lavatories. This rough-in fitting connects a P-trap or trap adapter to the drain stub-out in the wall, extending the tubular waste run to reach the wall opening when the fixture drain and wall stub-out are not perfectly aligned. Sized to 1-1/2" trade size, it is intended for standard residential and light commercial tubular waste applications where a plumber needs to bridge distance between the trap and the wall drain connection.

Key Features

  • Trade Size: 1-1/2" nominal tubular size, matching common lavatory and sink drain and trap connections.
  • Length: 15" overall length, giving the installer extra reach to connect a P-trap outlet to a wall drain stub-out that is offset or set back from the fixture.
  • Tubular Waste Design: Configured as a straight waste arm for use in below-sink tubular drain assemblies, installed with slip-joint nuts and washers at the trap and wall connections.
  • Field-Cuttable: Like other tubular waste arms, length can typically be trimmed by the installer to fit the exact rough-in distance during installation.
  • Rough-In Compatibility: Designed to pair with standard 1-1/2" slip-joint P-traps, trap adapters, and wall escutcheons commonly found in tubular drain-waste installations.

Technical Specifications

  • Trade Size: 1-1/2"
  • Length: 15"
  • Product Type: Waste Arm
  • SKU: Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Lavatory and Sink Tubular Drain Assemblies
  • Connecting P-Traps to Wall Drain Stub-Outs
  • Residential and Light Commercial Rough-In Plumbing
  • Drain Line Extensions Where Fixture and Wall Openings Are Offset
  • Plumbing Repair and Remodel Work

Why Eastman?

Eastman tubular waste fittings are built to standard 1-1/2" trade sizing so they drop into existing slip-joint drain assemblies without special adapters. The 15" length of the 35389 waste arm gives plumbers and contractors the extra reach needed to complete a clean trap-to-wall connection during install or remodel work, making it a practical stock item for rough-in and repair jobs.

Manufacturer Resources

Product Specs

list_batch:
EAS-20260924
Department:
Plumbing
Product Subgroup:
Drains and Cleanouts
Product Size:
1-1/2"
Product Type:
Waste Arm

Eastman 35389 – Frequently Asked Questions

1) Will the Eastman 35389 waste arm fit a standard 1-1/2 inch P-trap under a sink?
Yes. The 35389 is sized to 1-1/2 inch nominal tubular trade size, which is the common lavatory and kitchen sink trap size, so it joins standard 1-1/2 inch slip-joint P-traps and trap adapters without an adapter. It installs with slip-joint nuts and washers at the trap end and at the wall connection.
2) My sink drain and the wall stub-out don't line up. Can I cut this 15 inch waste arm down to length?
That is the normal install. The arm runs 15 inches overall, and like other tubular waste arms the length can be trimmed by the installer to the exact rough-in distance. Cut it at the wall end, keep the cut square so the slip washer seats, and leave enough tube inside the trap adapter for a proper joint.
3) What is a waste arm actually for, and how is it different from a tailpiece?
A waste arm is the horizontal leg that carries water from the P-trap outlet over to the drain stub-out in the wall. A tailpiece is the vertical piece that drops from the sink strainer down into the trap. The Eastman 35389 is the horizontal piece, used when the fixture drain and the wall opening are offset or the stub-out sits back from the fixture.
4) Is a 15 inch waste arm overkill for a normal lavatory, or do I need that much reach?
Pick the length by how far your stub-out sits from the trap. A 15 inch arm is for deep vanities, offset rough-ins, and back-set stub-outs where a short arm will not reach. Because it cuts down in the field, the longer arm is the safer stock item on remodel and repair work where the rough-in is not where the drawing said it was.
5) Do I need anything else besides the Eastman 35389 to finish the trap-to-wall connection?
Plan on the slip-joint nuts and washers for each joint, a 1-1/2 inch trap adapter at the wall where the stub-out requires it, and a wall escutcheon to cover the opening. The 35389 is one component of a tubular waste assembly, not a complete trap kit.
6) Can I use this waste arm on a commercial kitchen or a high-use sink?
The 35389 is intended for standard residential and light commercial tubular waste applications, such as lavatories and sinks in apartments, offices and similar openings. For heavy commercial kitchen waste or anywhere the drain is exposed to abuse or high heat, specify a heavier-gauge or DWV-grade waste line instead of a tubular arm.
How fast can I get the Eastman 35389 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eastman 35389 come with a warranty?
Absolutely. The Eastman 35389 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eastman 35389?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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