Westbrass A400-1-01 1-1/2 in OD P-Trap with High Box Flange - Polished

Our review of the Westbrass A400-1-01 P-trap finds it to be a straightforward, durable plumbing part for anyone replacing or finishing a bathroom or kitchen sink drain. The single biggest reason to consider this model is its combination of 17 gauge brass construction and a high box flange, which together offer a polished finish and a secure, easy installation. For a homeowner or tradesperson needing a reliable 1-1/2 in drain connection that matches decorative fixtures, this P-trap balances appearance and function without unnecessary complexity.

Key Features

• 17 gauge brass tubing: provides sturdy corrosion-resistant construction that holds up under regular household use.
• High box flange: offers a finished look at the wall box and helps conceal the rough opening for a cleaner installation.
• 1-1/2 in x 1-1/2 in sizing: matches standard sink tailpieces and traps for broad compatibility with common fixtures.
• Approximately 11-1/2 in reach: the center of the neck to the end of the tailpiece gives enough length for typical sink and cabinet setbacks.
• Slip joint nuts included: brass lock nuts on the neck and J-bend make assembly and future removal straightforward without special tools.

Who It's For

The Westbrass A400-1-01 is aimed at homeowners, remodelers, and plumbers who want a durable, attractive P-trap that complements polished brass fixtures and fits standard 1-1/2 in sink connections. It is well suited for kitchen or bathroom sinks where a visible trap is part of the design and a higher box flange is desired to tidy the wall penetration.

Those who need specialized traps (for example, larger 1-1/4 in or 2 in industrial plumbing, or integrated trap assemblies with odor-sealing cartridges) should look elsewhere. Also, if a non-brass finish or a different gauge of tubing is required for a specific installation, confirm availability of that finish before purchasing.

Pros & Cons

Pros

• Solid 17 gauge brass construction offers longevity and a polished appearance that pairs with decorative fixtures.
• High box flange delivers a neat, finished transition at the wall box for a professional look.
• Slip joint nuts and brass lock nuts simplify installation and maintenance without special tools.

Cons

• Length and style are fixed; installers with unusual setback distances may need to confirm fit before ordering.

Specifications

Brand	Westbrass
Model	A400-1-01
Trap OD	1-1/2 in
Gauge	17 gauge brass
Length	Approximately 11-1/2 in from center of neck to end of tailpiece
Connections	1-1/2 in x 1-1/2 in slip joint
Included	Slip joint nuts and brass lock nuts on neck and J-bend

Our Verdict

The Westbrass A400-1-01 P-trap is a sensible buy for anyone who needs a reliable, visually matching trap for standard sink installations; its 17 gauge brass and high box flange deliver both durability and a finished look. For typical residential bathroom or kitchen sinks it represents good value because it simplifies installation with included slip joint hardware while maintaining an attractive polished brass appearance.

Frequently Asked Questions

Will this P-trap fit a standard 1-1/2 in sink tailpiece?
Yes. The trap is 1-1/2 in OD x 1-1/2 in and is designed to connect to standard 1-1/2 in tailpieces using slip joint nuts.

Does the unit include the nuts needed for installation?
Yes. Slip joint nuts and brass lock nuts on the neck and J-bend are included to make assembly and removal straightforward.

Is the finish suitable for visible installations?
The polished brass finish is intended to complement decorative fixtures and the high box flange helps provide a clean visible transition at the wall.