Fixed wall shelves should install into the garage studs with huge lag bolts for maximum load. The best option is simple enough to install without help.
The Fleximounts 2×6 garage wall shelves are simple to install, and carry up to 400 lb. each. One box of two shelves has a load capacity of 800 lb.
How to Install the Fleximount Fixed Garage Shelves
Fleximounts is a do-it-yourself fixed-shelf garage storage system that you can install yourself.
On most jobs, you throw away the included hardware because it's so flimsy.
Not with Fleximounts.
The box comes with extra strong lag bolts, not just some bendy screws that you don't trust.
To install the shelves, start with a 3/16 in. drill bit and the included placement template.
The first thing you'll do is attach the included bubble level to the template.
Place the template over the installation area, centering it where the shelves will go.
Use the template holes to mark where you'll put your starter holes.
The template includes placements for 16, 24, and 32 inch on center studs.
Ensure the template is level, and mark your drill holes with a pencil.
Pre-drill the holes using a 3/16 inch drill bit.
Next, switch to an impact drill with a socket end.
Place the brackets over the installation area, line the holes with the drilled starter holes, and drill the lag bolts into the garage wall studs.
You will end up drilling two lag bolts for each bracket.
Next, place the shelves on the brackets.
When you're done, you'll have two shelves, but you need to know that the shelves come in sections.
So there are two sections of shelves that will slide onto the brackets.
The brackets are twice as deep as the shelves, they accept two shelf halves to make one whole shelf.
You will slide the wire into notches on the brackets that guide them exactly where they should go.
Then you'll wrap the Velcro straps around the brackets and shelves to tie them together.
How to Buy the Best Fixed Shelves
As I write this, the Fleximounts are available with a substantial coupon on Amazon. Your mileage may vary.
The Garage Organization store is also having a sale, so I would try that site as well.
Buy the shelves on Amazon.
Buy the shelves on Garage Organization.