~ Outstanding and superior locking system
~ Split second opening from underground bypassing all locking mechanisms
~ Adjustable spring tension (in-situ)
~ Once open the cover remains locked open until manually closed
~ Mechanism of 'crack the seal' provided as standard in case of dirt accumulation
~ Tolerance fit of 0.01 to 0.05 mm can be arranged to suit ambient temperatures
~ Corrosion resistant cover is of aluminium (alternatives offered) and all other parts are generally stainless steel except frame (alternatives offered)
~ Our standard opening size of 760mm x 760mm ensures safe access to all emergency services. Made in any shape and classification with other modification to suit
~ Almost maintenance free