These are the "M Brace Brackets" and you can find them here: http://www.outdooressentialproducts.com/mbrace.htm The brackets used on this job are the unfinished steel, although they do come in a nice, rich bronze. We (and our clients) have been very happy with them.
Looks like you added screws to the bracket...was this fairly easy to do? I ask because I want to recommend this product for a do-it-yourself article on raised bed gardening.
When I bought these M Brace brackets there was no recommendation for screwing them. I can tell you that they are not worth using if you don't screw them. They are sold to work with no screws. Not worth buying. They do not hold the boards well enough and the soil seeps out. I was very disappointed with my purchase.
Alli Addison Branding and Design
Addison Landscape & Maintenance, Inc.
Related Discussions
Have a bare metal 16ft x 7ft fence along the street side...
Q
Box house fix up.. What would you do???
Q
What did you see first in this picture?
Q
Home Renovation: Do you do the painting yourself or get professionals?
Q
Sparrow Landscaping LLC
Addison Landscape & Maintenance, Inc.
Bitabit