At 08:02 PM 10/1/2014, you wrote: >4 lbs. plus a lb for foam. >Roger ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You will most likely, and I'd advise you do, use a noise cancelling headset. The foam and ply will not be necessary. You certainly won't need it to improve the structure. 500+ hours with no insulation speaking. Larry Flesner
