Abstract: A shell apparatus to enhance insulation and prevent air transmission of an electrical junction box coupled to a stud is provided. The electrical junction box includes at least one wire coupled to a housing member and positioned within a wall cavity between a front wall and rear wall. The housing member of the electrical junction box includes an opening aligned with an opening in the front wall. The shell apparatus includes a foldable sheet with a center portion, a first flap, a second flap, and a third flap. The first and second flaps are coupled to the stud, and the third flap is coupled to the rear wall to permit the foldable sheet to enclose the electrical junction box's housing. An expansion foam is disposed between the foldable sheet and electrical junction box to entirely fill the void between the front wall, rear wall, foldable sheet and electrical junction box.

Abstract: A method and apparatus is disclosed for monitoring flow conditions in boreholes or the like wherein a test interval is defined by a packer system and contains a substantially incompressible fluid or liquid making it difficult to conduct measurements from the surface. According to the method and apparatus of the present invention, a variable volume device is arranged within the test interval along with a suitable flow monitor which may comprise the variable volume device itself, the variable volume device being operable to limit pressure variation within the test interval and thereby minimize compliance effects over a predetermined test period. Preferably, the variable volume device is coupled with a pressure monitor for maintaining substantially constant pressure in the test interval. In different embodiments, an initial pressure differential is established between the test interval and the surrounding formation by operation of the same variable volume device or by means of a second variable volume device.