Aspen’s EW-Series (Equipment Series) are equipment/machinery hauling trailers which primarily serve the construction industry. Configurations vary from payloads of 65 tons through 85 ton capacities, with axle configurations ranging from 9 through 13 axles (including truck axles). Aspen EW-Series trailers feature mechanical removable necks with a tower jeep or hydraulic removable necks with double drop, square tail frames. EW-Series trailers can be configured with a variety of components including various deck widths and lengths including custom options. The EW-Series trailers have common air/regulated air suspensions or walking beam (trunnion) suspensions with transporter equalization achieved by a mechanical equalizing inner frame “Cali-Legal” or “West Coast” design. Aspen’s EW-Series of trailers are available in specific regional configurations (Interstate – US and Canada, US North West, and California) to maximize trailer configurations for specific regional regulations.