Multilayer sleeves for insulating or protecting elongated substrates are disclosed. The bale lift device includes a back frame, a spear member, and rotation axis. The bi-directional inverter may also include a DC to AC inverter configured to receive DC power from the DC bus and generate AC power delivered to the power grid. The transparent sheet has a circular shape with a diameter d1, and the central hole thereof has a diameter d2. A top wall is removably coupled to an upper edge of the sidewalls of the bridge fitting and is coupled to the connecting raceway section.