1 translation missing: en.accessibility.of 17
  • View Full Gallery (17)

Box Frame Bed

Finish & Kit Style
Bed Legs Finish
Wood Kit
Select your dimensions
Bed Height
Regular price
Regular price
Sale price

We are launching Box Frame bed with wood kits soon.

We are launching Box Frame bed with wood kits soon. Stay tuned!

What you need to know

Each DIY platform bed kit includes the following ready to make items:

  • 4 precision manufactured corner pieces 
  • 2 headboard brackets 
  • 2 center support brackets

Wood and screws not included, cut list provided below. 

Made in our Nevada factory from recycled steel, precision cut, sandblasted, and then powder coated for a clean finish - each leg is built to last a lifetime.

A Bed For Your Changing Life

Life changes, as if we needed a reminder. Whether it's kids getting bigger or moving to a bigger / smaller space, your furniture needs flexibility and durability. 

Our Box Frame Bed brackets are ready for all the sizes, and all the moves. 

  • 12" provides for 6" of clearance
  • 15" provides for 9" of clearance
  • 18" provides for 12" of clearance

Do all the cutting and making yourself, or take our cut list to your local home improvement shop. Make in under two hours. It’s that easy.

Build Instructions & Cut Lists

You can build your bed with just a few simple tools, one sheet of plywood, and a few standard pieces of lumber.


Create a strong, sturdy bed frame with our solid steel brackets.

  • Cut wood to size, or purchase pre-cut (see cut list above). Sand lightly and remove dust. Apply finish, if desired, and let dry.
  • Set the four Box Frame Bed Brackets out, and begin by assembling the frame. Insert the two longer lengths (sides) into the brackets first, flush against the bracket corners. Then add the shorter head and foot pieces between the two side pieces, and secure with screws.
  • Add 2x4 rails to support the slats. Place rails on the inside of the brackets, flush with the bottom of the frame, and attach to the frame with screws.
  • For full-size through king-size beds, be sure to use a center support. Screw the center support brackets to the ends of the center support beam. Measure to find the midpoint of the width of the frame. Attach the center support beam to the inside 2x4s so that the top of the center support beam is flush with the rails.
  • Lay the slats across the rails, starting with the head and foot ends, so the first and last slats overlap the rails. Space the remaining slats evenly, and secure the slats to the rails with a screw at each end.
  • Slot in the assembled headboard bracket, slide the headboard in, and hand tighten the knob.
  • Add your mattress on top of the slats, and enjoy your new bed!


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. If you have any questions about what size you should choose, just drop us a note.

Bed Clearances Heights:

  • 12" provides for 6" of clearance
  • 15" provides for 9" of clearance
  • 18" provides for 12" of clearance
Box Bed Frame - Product Specifications - Semi Exact

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.

Shipping & Returns

All items are able to be returned within 30 days from your order as long as they are in new condition. We also accept returns for workmanship defects within the lifetime of the product. Learn about our warranty here.

USA Customers
 Any item can be returned in new/unused condition and in original packaging. Returns are accepted within 30 days of delivery 

  • Returns requested within 30 days of the delivery date and in original packaging, that are unused, will be accepted.
  • Our original shipping and delivery fees are not refundable.
  • Returned goods have a 10% restocking fee.
  • There is a flat rate $15 return label cost for orders of $250 or less, for orders of $250 or more the return label will be at cost. If you’d like to use your own label feel free to do so and see below for shipping instructions.

International Customers
Unfortunately, we are not able to accept returns at this time for international orders.

Defective/Damaged Orders:
Damage happens, and we will make it right! If your order arrives damaged or defective just  let us know within 30 days of delivery. Email photos of the damage along with the packing slip to makewith@semiexact.com. 

Click Here for our Terms of Service


Ships just 2-3 weeks after order is placed.

The New Colors.

We've scoured the land and have come up with 4 limited edition colors for your enjoyment. Introducing: Buttercream, Casual Turtle, Lava, and Moondust. All available now for the DIY Platform Bed kit.

View Full Gallery (4)

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.
1 translation missing: en.accessibility.of 7

Precision Manufacturing.

Have you ever tried to make a wooden chair or a table? What's hard is getting the pieces to stay together under a load. You either need to have some really hard wood and strong joinery skills, or you need to beef up the lumber and use lots and lots of screws and glue to Frankenstein it all together. (See everyone’s first woodworking project :)

But what if we made the metal do the heavy lifting and you focused on the clean lines, the lumber species, the grain pattern? Instead of dropping a few hundred on new tools, what if you designed within the constraints most of us have, a small saw and a drill, or a way to get to Home Depot with a cut list?

That's how we approach our metal product designs. We make, so you can make it.

Most of us don't have time to learn how to make a castle joint from walnut that might end up as a $600 mistake. But we can take some walnut or birch plywood and make some pretty amazing beds with a little help from these Box Frame Bed metal corner legs.