STEP 1: Measure your box lid


Hold your Box Lid up against the Sizing Chart on our packaging Spine. The top of the Lid will line up against S, M (like this box), L or XL.  Select accordingly. Or you can measure your Lid yourself.

STEP 2: Select your size & color


Check the bottom of the FIXdaBOX packaging to see what size set is inside. Check our viewing window to see the color set inside. Available in Clear, Red, Blue, Black and Pink.

STEP 3: Attach the base piece


Attach the FIXdaBOX bottom or 'Base Piece' by inserting the  edge of the cardboard  Box Lid into the grooves.

STEP 4: Ensure grooves firmly attached


The cardboard Box Lid should be completely inserted into the grooves. If they are not completely inserted, refer the "Penny Test" in FAQ.

STEP 5: Attach the corner piece


Attach the 'Corner Piece'  above the Base Piece. Insert the protruding Spine, into the Base piece until pieces lock and fit is tight.

STEP 6: Repeat for all corners


Repeat for all 4 corners of your Box Lid,  fit should be tight and secure.

MEASURING your box lid

Use a tape measure or ruler

If you don't have access to our unique Sizing Scale on the FIXdaBOX Packaging Spine, you can still  easily determine what size set you need for your game or puzzle box. Measure the height of your Box Lid with a tape measure or ruler:

  • 1.1 to 1.7 in (2.8 to 4.3 cm). Select  a Small set.
  • 1.7 to 2.3 in (4.3 to 5.8 cm). Select a Medium set.
  • 2.3 to 3.0 in (5.8 to 7.6 cm). Select a Large set.
  • 3.0  to 3.6 in (7.6 to 9.1 cm) . Select an Extra Large set

If your measurement falls at the end of one size range and the start of another, we recommend you choose the larger size. The fit will most likely be tighter and more secure.

FIXdaBOX is available in Small, Medium, Large or Extra Large to fit most board game and puzzle Box Lids.

Packaging Color Key:

Small sizes - purple packaging

Medium sizes -green packaging

Large sizes - blue packaging

Extra Large sizes - red packaging


About Us


FIXdaBOX is a family-owned business. Growing tired of our own broken game and puzzle boxes and missing pieces, we decided to explore some solutions. We developed a number of prototypes and spent a year testing and trying out different ideas. We like that our final (patent pending) FIXdaBOX system avoids tape or glue, accommodates many box sizes, is available in a variety of colors and is strong and durable. We are pretty proud of our unique packaging that allows you to measure any Box Lid against it, so you can easily determine what size FIXdaBOX set you need. We launched in 2019 and are excited to hear what you think. Let us know!

The FixDaBox Team

New York 

Education Discounts


 Teachers, therapists, schools and camps - do you work with games and puzzles? Contact us now to see how you can qualify for extra savings!

Become a FIXdaBOX Retailer


Compliment your existing game, puzzle or toy range. Ask us how. 

Contact Us

Drop us a line!

Email us - we'd love to help you fix your old boxes - and protect your new ones.

Fixdabox LLC

P O Box 314, Rye, NY, 10580, USA,




1 to  3 business days response time.