Purple Martin MP-15-4 Heavy Duty Telescoping Pole, For Use With Heath Purple Martin Houses, 15 ft | This extremely strong, three-section galvanized steel pole telescopes to 15 ft when fully extended and locks with a convenient, easy-to-use key fastening system. For maximum stability, it's recommended that you plant this pole deep in the ground or concrete, a plastic ground sleeve is included to make this process easier. Once it is firmly seated, this pole is sturdy enough to hold the heaviest of martin houses in even the heaviest winds.