We added a longitudinal beam in the middle that  keeps the slats from bowing too much.

We added a longitudinal beam in the middle that keeps the slats from bowing too much.

The picture was taken by "cg" on 15-08-2015 at 19:38
Camera: Nikon D300S
Aperture: f/2.8 | Exposure: 1/60 | ISO: 1000