Check the listing for details. Channel Master CM-3090 Telescoping Universal Antenna Mast Pole Adjustable Roo.... Color: Black, Condition: New. Listed at 92.96 USD. The Channel Master Universal Antenna Mount is a one-of-a-kind mounting solution enabling consumers and professionals to easily install many different types of outdoor antennas in a variety of different mounting applications. The Universal Antenna Mount will accommodate most brand and styles of outdoor TV antennas. The Mast section of the mount is adjustable and telescopes from 24 inches to 44 inches allowing for clearance on most pitched roofs or to extend above a wall. The mounting plate was designed to revolutionize the traditional J-mount with two adjustments allowing it to be installed on angled and/or pitched surface’s while maintaining a vertical positioned mast. Compatible with Most Types, Styles and Brands of Outdoor Antennas Includes Telescoping Mast with Adjustable Length from 24" to 44" inches Revolutionary Mounting Plate Offers Multiple Customizable Adjustments Allowing for Installation on Angled and/or Pitched Surfaces While Maintaining a Vertical Positioned Mast Supported Installs: Roof, Wall, Eave or Attic for Slanted, Pitched, Vertical or Horizontal Surfaces Pre-Galvanized Steel: UV Stable, Matt Black Powder Coat. Max Load: 30 lbs (Depending on Mounting Surface)