Abstract: A pipe covering assembly covers a gap defined between an exterior surface of a pipe and an opening in a wall through which the pipe extends. The pipe covering assembly includes a substrate layer having a through-hole for receiving the pipe, a front surface and a rear surface. A mesh material layer is either attached to or contained within the substrate layer. An adhesive layer is directly applied to the rear surface of the substrate layer, wherein the adhesive layer includes an adhesive that is configured to be applied to the wall and the pipe. A plurality of concentric rings are either printed on the front surface of the substrate layer or disposed on a layer that is applied to the front surface of the substrate layer, each ring of the concentric ring corresponding to a pre-determined pipe diameter.

Abstract: A pipe covering assembly covers a gap defined between an exterior surface of a pipe and an opening in a wall through which the pipe extends. The pipe covering assembly includes a substrate layer having a through-hole for receiving the pipe, a front surface and a rear surface. A mesh material layer is either attached to or contained within the substrate layer. An adhesive layer is directly applied to the rear surface of the substrate layer, wherein the adhesive layer includes an adhesive that is configured to be applied to the wall and the pipe. A plurality of concentric rings are either printed on the front surface of the substrate layer or disposed on a layer that is applied to the front surface of the substrate layer, each ring of the concentric ring corresponding to a pre-determined pipe diameter.

Abstract: A smoke detector system with a first DC power supply and a second DC power supply connected to at least one smoke detector wherein the first DC power supply may be powered by an AC power input and the second DC power supply may be a battery is disclosed. The smoke detectors may be powered primarily by the first DC power supply during normal operations. The second DC power supply may be configured to supply power to the one or more smoke detectors in the event of the loss of the AC power input to the first power supply.