Rated at 250 watts and 4.5dB gain, you can expect years of continuous service. The radiating elements are constructed of copper & copper alloy. They are encased in a fiberglass radome for total environmental protection. The fiberglass radome is ultraviolet inhibited. The heavy wall aluminum mounting sleeve is epoxy coated for superior weather protection. These antennas are lightweight at less than 8 lbs. but are designed to easily withstand winds of over 125 MPH. Using the optional BSLLMNT2 or BSLLUMNT2-4 mounting kit, installation takes only minutes.