My sister needed new outdoor furniture for her deck and liked the look of the sectional. I used cedar with a clear varnish to creat this piece for her that was perfectly sized for her deck.
The challenge to this one was getting it to her house about 3 hours from mine. Fully assembled it would have been tight getting it in my truck. I ended up cutting all of the boards and drilling all of the pocket holes in my shop and then assembling at her house. I have added backs to some of the pieces I have made fro others that want the extr support. I add a 1x4 laying flat across the back of the seat. The slats going up and down then have a slight angle to them which adds comfort and support. I attached the pieces to the 1x4 and the upper back rest piece in the plans.