This is a pretty obscure question and I'll preface it with the scenario. We have a job that is being laminated and we need to ship it by truck when finished. Does anyone have a clue what kind of weight would be added to a printed piece by laminating both sides of the sheet with a 1.5 mil laminate? Would it double the weight, or maybe half again? Any ideas? We're trying to quote shipping, the paper is easy to figure but not sure what the plastic will do to the equation.