Disclosed herein is a secondary rectifier for an LLC half-bridge power converter for driving an LED, which provides a power converter with efficiency and stability higher than a conventional power converter using a rectifying diode. This vehicle, when exposed to moisture, will release chlorine dioxide for purposes of deodorization or microbial suppression. A seawall structure includes a plurality of these seawall tubular members positioned side by side in self-locking engagement to form a row and supported by being supportively embedded into the earth. The cable tray includes a substantially level service loop section, a cable access ramp and a cable drop lip, the service loop section connected to a cable access ramp and to a cable drop lip, the cable drop lip positioned to guide a first set of cables resting on the first cable tray into a data cabinet under the ladder rack containing termination points for cables.