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The Panel + Groove Shelving System

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What you need to know

Our Panel & Groove system is built to last. Made in the USA from the best quality recycled, 16 gauge, American steel. Then we sand-blast it in-house and hand finish using our durable eco-friendly powder coating. 

Designed to help you build your own furniture.

Have questions?
Click here to start a chat with our team.

With these you can build:

  • Credenzas
  • Book cases
  • Media & vinyl storage
  • Media consoles
  • Garage storage
  • + so much more. 

Three Panels make a box. Fasten to the wood of your choosing and build as many levels and compartments as you need. Each shelf pair is rated at ~40lbs (per shelf).

Pair with these legs for a full build kit:

Sliding Door Panel Coming soon!

Product details & specifications

Measure twice, cut once. We provide our specs right up front so you have the details you need to plan your build.

Click on drawing for larger image

Our powder-coat finishes are scratch-resistant and rust-proof, so they don't need much care. Just be sure to touch up any exposed steel if you happen to scrape them with something sharp.

Product instructions

Product Care

Clear & Color Powder Coats

Our powder-coat finishes are scratch-resistant and rust-proof, so they don't need much care. Just be sure to touch up any exposed steel if you happen to drag them across rough surfaces, such as pavers, or scrape them with something sharp.

Raw Steel Care

Raw steel arrives with a thin layer of residue to protect it from rust while in transit. Sealing your raw steel with wax, paint, or a clear coat will keep it looking its best (or you can let it develop a natural rusted patina).

  • Raw steel legs ship with wax for sealing
  • Apply a rust-inhibitive clear coat rather than wax if using outdoors
  • Sprayed finishes work best for paint or clear coat (use products that are suitable for metal)

Shipping & Returns

As a company that focuses on creating custom sizes and that manufactures to your specification, returns can get a little tricky. We can accept returns for Quick Ship items within 30 days of delivery. 

We do not currently accept international returns. 

For our full return policy, please go here.

Ships in: 4-7 Business Days

Adaptable. Unique. Fun.

The Semi Exact Panel & Groove System provides endless adaptability for maximum creativity.

Share Your Build.


Build something with the Panel + Groove system, share it with us on IG @semiexact using the hashtag #panel+groove and share the love of making. 

Fun fact, the sketches to the left are from our original design process with Jesse Hill of Hill Studio.


What Others Are Building

The Semi Exact Difference

Your Ideas
You sketch it out. We help make it a reality with custom sizes and colors.
Our Inspiration
We focus on ready to make furniture that is easy and enjoyable to build.
Precise Manufacturing
We manufacture in the USA with precision equipment and a team that cares.
Shipped to You
We make every order to your custom specifications and ship to your door.