These are the seat back feet that are attached at three positions aligned at the ends of the three middle support 1x4s. The bottom ss 1/2" oval screw holds the feet to extension piece. The drilled hole shown in only two of the feet screw into the end of the support 1x4s.

The next photo will show this more clearly.

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Date: 08/28/12 - 5:51 AM
Added by: Ron Mazcko
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