The Clark Masts QT portable lightweight air-operated telescopic mast (Pneumatic Mast) series was first introduced back in 1959 (Australia saw it in the early 1960's courtesy of a company called Belling-Lee and the foresight of a gentleman working for them at the time, Frank Welsh). In 1959, father of the Clark Mast, Alec Clark (who has now retired from the company) foresaw the need, in addition to their 1957 introduced PT Series, for an easily handled light weight low cost portable mast. By the late 1960's still only four models existed in the QT mast range, a far cry short of 2023's eighty-four different models (See the "History Of Clark Masts" article for more details on their early masts). Then, as now, the distinguishing feature was its air-operation and side attached handpump. This method of extension makes the Clark Masts QT portable pump up mast self contained, lightweight, easy and rapid to extend (10 to 70 seconds depending on mast's extended height using the attached handpump) and very gentle in retraction. Locking collars on all Clark Masts QT series portable mast sections allow each section to be locked at any extension height, making the mast usable over a variable height range or alternatively locked at maximum height for long periods of time with the internal air pressure released. A PDF Brochure covering the 2023 QT portable mast series is available online.

Clark Masts QT masts are divided into two categories, the Clark Masts QT Series shown on this page and the heavier duty Clark Masts QT /P and /PX Series which are detailed HERE Also a new self contained Tripod version, complete with guying kit for field mounting, is now available as the FT Tripod Mast Series.