TOP-QUALITY ACOUSTIC MLV BARRIER SERVICES NO FURTHER A MYSTERY

 Very carefully sense the box place then with a utility knife Slice the hole on The within fringe of the box opening. Then, as MLV is somewhat versatile you force and kneed the MLV about the box edges. A around best seal really should result along with the MLV should really come in contact with the Putty Pad material forming a seal.Pound for pou