Okay Plans – 8’x8′ – Step-By-Step Plans – nstruct101 Cut two 2×4’s to 8′ long, rip the 2×4’s to 2 9/16″, cut an 18 degree bevel cut to the edge. Nail 3 1/2″ nails through the 2×4 and into the rafters. Install the Okay plastic using sles. Cut 1×2 trim to size and install as []