Exterior Nesting boxes, need replies quickly

[Zahboo]

I am going to store tomorrow and it's 11 pm, so I need to know so I can plan.

With exterior nesting boxes, how do you attach these so they are sturdy.

 

[orchidchick]

I used three L brackets on the bottom and I don't know what you call the things on the side, I think it's some kind of framing hardware; but it is very sturdy!

This nest box is 30" long, made out of leftover teak boat interior scraps.

Orchidchick