Eastman 1-1/2" x 6" Extension Tube: Fit Your Sink Drain
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The Eastman 1-1/2" x 6" extension tube (#35366) adds length to a tubular sink drain so the tailpiece, trap and wall connection line up. It connects with slip nuts and washers and can be cut to length.
Swapping a sink, vanity or cabinet often leaves the drain a few inches short. The Eastman 1-1/2" x 6" extension tube (#35366) adds length to a tubular drain so the tailpiece, trap and wall connection line up properly.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Drain extension tube |
| Size | 1-1/2" x 6" |
| Brand / model | Eastman #35366 |
| Connection | Slip joint (nut and washer) |
| Typical use | Kitchen and bar sink drains |
What an extension tube is for
Extension tubes join to other tubular drain parts using slip-joint nuts and washers. They're used to:
- Lengthen a sink tailpiece so it reaches the P-trap
- Bridge the gap between a trap and the wall drain
- Adjust drain height after changing a vanity or countertop
How to install
- Measure the gap you need to fill and cut the tube to length with a fine-tooth saw if needed.
- Remove burrs so the washer seats evenly.
- Slide a slip nut and washer onto the tube, with the washer's bevel facing the joint.
- Insert the tube into the connecting part and hand-tighten the slip nut.
- Run water and check for leaks. Give the nut a small extra turn if it drips.
Tips for a leak-free drain
- Don't overtighten plastic slip nuts; hand-tight plus a little is usually enough.
- Keep the trap level and the drain sloped toward the wall.
- Use a new washer each time you take a joint apart.
Related parts
Maintenance Depot stocks tailpieces, trap adapters and pop-up drain assemblies, so you can finish the whole sink drain in one order.
Frequently asked questions
Can I cut an extension tube?
Yes. Cut with a fine-tooth saw and remove burrs so the washer seals evenly.
Why does my slip joint leak?
Common causes are a missing or reversed washer, a misaligned pipe, or an over-tightened plastic nut.
Is 1-1/2" the right size for a bathroom sink?
Bathroom basins usually use 1-1/4". Kitchen sinks typically use 1-1/2".
Buy 1-1/2"X6" Extension Tube EASTMAN #35366 at Maintenance Depot