Lavex 24" Deep Black Z-Beam 5-Shelf Boltless Double Rivet Particleboard Shelving Unit with 72" Uprights

Place the post caps on the bottom of the 4 posts. Make sure the large slots are facing upward. Next, place a short beam in between two posts on the inside of the posts at the desired shelf height. Insert into the opening and press down so that it slides into the narrower slot. Secure the beam in both posts. Repeat this step with the other set of posts.

Take two long beams and secure them to either side of the posts and their braces. Make sure the beams are level with the short beams. Then, tap into place with a rubber mallet and cloth to secure all 4 beams.

Attach the midsection support bar to the long beams by inserting the teeth of the support bar into the openings on the long beams. The midsection support bar should run parallel with the short beams. Repeat steps 2-4 to set up the other posts.

Finally, arrange the particle board in place on the lower shelf and place post caps on the top of the 4 posts. That's it! You've now successfully assembled your shelf.