PVC Window Box

Measure the window's width — this sets the box's overall length. Cut all PVC pieces per the cut list, mitering the trim pieces as noted.

Glue the ripped bottom panel to one of the long side panels with PVC cement and finish nails, set in 3/4in from the edge.

Attach the two end panels with PVC cement and finish nails to close up the box.

Attach the mitered trim pieces around the top edge, and the cleat pieces to the back for mounting.

Caulk any remaining seams, then mount to the house with Tapcon screws on brick or wood screws on siding.