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The Onyx Collection Professionally specified & installed by Prowess Precision

Custom shower systems for Charlotte & Lake Norman

Design an Onyx shower around the way you live.

Explore made-to-order bases, wall panels, color-matched trim, storage, seating, doors and accessories—then let one local installation team measure, plan and build the complete system.

  • Made to orderSize, shape & color
  • Complete systemBase through finishing trim
  • Local installationCornelius-based project team

Design inspiration courtesy of The Onyx Collection. Photography may include non-Onyx fixtures or finishes.

One coordinated bathroom system

Built as a collection. Installed as one precise project.

Onyx manufactures shower bases, wall panels, trim, accessories and lavatories to the project’s dimensions and color direction. Prowess Precision turns those choices into a field-verified installation plan for your home.

01

Shower bases

Standard and custom bases in low-profile, mid-height, full-height and ramped configurations, with center, offset and project-specific drain locations.

  • More than 90 standard size and style combinations documented by Onyx
  • Custom size, shape and threshold options
  • Pebbled and hexagon textures on eligible custom pans
02

Wall panels

Solid-color-through panels, approximately 3/8-inch thick, made to the measured wall size with finished exposed edges.

03

Storage & seating

Recessed, corner, surface and floating storage paired with corner, extended and bench-style seating.

04

Trim & details

Inside and outside corners, crown, casing, baseboard, edge caps, mosaic trim and other finishing pieces.

05

Doors & drains

Multiple door constructions, glass choices, hardware finishes and round or square drain options.

Six wall-panel directions

Grout-free surfaces, from quiet to architectural.

Choose a molded surface profile, then pair it with an eligible Onyx color. Final size compatibility is confirmed during specification.

Most popular

Gloss Smooth

A classic, reflective smooth surface designed for straightforward care.

Maximum documented panel dimensions up to 118½" × 118½"; panels cannot exceed 80" in both directions.

Subway Tile

A flat 3" × 9⅝" tile look with shallow molded grout lines—without traditional grout joints.

Horizontal or vertical orientation; size limits vary by orientation.

Stone Tile

Molded from natural 11⅜" square stone tiles for a dimensional, continuous-panel look.

Maximum documented width and height: 104⅝".

8" × 24" Wavy Tile

Long-format sculptural movement that can run horizontally or vertically.

Actual tile field: approximately 7⅞" × 24⅛" with 3/16" lines.

Shiplap

A smooth surface with a ¼-inch recessed groove spaced every 5 inches.

Horizontal or vertical orientation; size limits vary by orientation.

New

Artisan Tile

A broad-format tile composition with molded lines for a clean contemporary rhythm.

Tile field: 24" × 11 9/16"; horizontal or vertical orientation.

Current online color selector

Compare your favorite Onyx colors.

Select up to six colors. We will carry your saved shortlist into the consultation form below. Screen images are a starting point; physical samples are the final color reference.

Interactive standard-shower preview

See every color in the same shower.

Choose any swatch below to place that Onyx color across a standard three-wall alcove. The consistent layout makes it easier to compare light, movement and overall mood from one option to the next.

Previewing Carrara

How it works: one click previews the color and adds it to your shortlist. Click it again to remove it from the shortlist; the shower preview stays in place.

Choose a color
Standard alcove shower color preview A planning illustration of a three-wall shower whose wall finish changes when an Onyx color swatch is selected. STANDARD ALCOVE
Interactive planning preview—not a photograph or exact color match. Lighting, screen settings, finish and pattern placement vary. Confirm with a physical sample before ordering.

Full product scope

Every component, organized for a simpler decision.

Use the categories below to understand what can be considered during design. Availability and compatibility are confirmed for the specific project.

22 documented choices

Storage that looks integrated—not added later.

Coordinate the storage color with the wall system or create a deliberate contrast.

Floating Series

  • Floating Corner Shelf
  • Extended Floating Corner Shelf
  • Floating Extended Surface Shelf

Liberty Series

  • Corner Shower Caddy
  • Tall Corner Caddy
  • Tower Recessed Caddy
  • Wide, Narrow & Ultra Wide Recessed Caddies
  • Shampoo Recessed Caddy
  • Corner & Surface Shelves
  • Recessed Soap Caddy
  • Recessed Foot Shelf
  • Recessed Foot/Soap Shelf
  • Corner Foot Shelf

Pearl Series

  • Corner Shower Caddy
  • Tall Corner Caddy
  • Corner Shelf
  • Wide Recessed Caddy
  • Recessed Shampoo Caddy
  • Surface Shelf

The Prowess Precision process

From color shortlist to finished shower.

  1. 1

    Fit call

    We learn the room, goals, service location, timing and whether the project is a replacement, conversion or larger remodel.

  2. 2

    Field measure

    We verify stud-to-stud dimensions, wall conditions, drain location, openings, clearances and accessory backing requirements.

  3. 3

    Selections

    We coordinate base, wall finish, physical color samples, caddies, seats, trim, door, fixtures and safety details.

  4. 4

    Project proposal

    You receive a scope-specific proposal based on the verified system and actual installation requirements.

  5. 5

    Order & install

    After approvals, we coordinate the made-to-order materials and complete installation with documented final checks.

Installer-level planning

Onyx wall panels are installed with specified adhesive silicone and color-matched seam silicone. Panels can be trimmed with woodworking tools, but finished-edge orientation, dry-fitting and installation sequence all matter.

Important limitation

Onyx states that its wall panels are not intended for steam-shower use. Accessibility and code-related outcomes always require project-specific evaluation.

Questions before you begin

Onyx shower planning FAQ

Need a project-specific answer? Call (743) 248-1309.

Why does Prowess Precision not show Onyx prices online?

Onyx products are made to order. Final material and installation cost depends on verified dimensions, panel finish, color, base configuration, accessories, trim, enclosure and site conditions. We prepare a project-specific proposal after field verification.

Are the color swatches on this page exact?

No screen can reproduce a physical material perfectly. The manufacturer recommends physical samples, and Prowess Precision will help confirm the color direction before an order is finalized.

Can Onyx panels be used for a tub surround?

Yes. Onyx identifies its wall panels for showers and bathtub walls. The panel layout, finished edges and site dimensions are planned for the specific opening.

Can the panels be trimmed during installation?

Yes. Onyx documents cutting, notching, drilling and sanding with standard wood-cutting tools. Prowess Precision handles final-fit planning as part of the installation scope.

Can Onyx wall panels be used in a steam shower?

No. The manufacturer states that Onyx wall panels are not intended for steam-shower use.

What does the manufacturer guarantee cover?

The Onyx Collection advertises its products as “Guaranteed Forever.” The manufacturer’s current written terms, exclusions and claim process control and should be reviewed for the product ordered.

Where does Prowess Precision install Onyx shower systems?

We focus on Cornelius, Davidson, Huntersville, Lake Norman, Charlotte and approved surrounding North Carolina communities. Submit your ZIP code and we will confirm service availability.

Request an Onyx installation consultation

Bring us the room. We’ll help build the system.

Tell us what you are considering. Your saved color shortlist will appear in the form automatically.

Based inCornelius, North Carolina

The Onyx Collection name, product names and source photography belong to The Onyx Collection, Inc. Product facts on this page were compiled from its current public catalog, color selector and installation information. Final specifications are verified before order.

No obligation. Do not include payment, medical or other sensitive information.

Plan your Onyx showerRequest consultation