Cover Flange for ugly plumbing under the sink

The plumbing coming up under the sink has ugly holes in the cabinet bottom, the plumber left crappy plastic covers that get knocked off by looking at them wrong. I made these screw down units to annoy the next guy to work on the stuff.

Hardware: 

• Two M3x6 or longer
• Four M3.5 or #6 wood screws 12mm  ½" or longer