EJ, formally known as Havestock, manufactures a range of advanced high security manhole access covers and drainage grates for use in secure environments of penitentiary, prisons, jails, detention centres and military / defense locations. High security access covers and grates, to AS3996, are available with various locking arrangements from barri bolts, custom keyed bolts to cam locks and horizontal hidden bolting mechanisms. All our covers are manufactured in compliance with Australian standard AS3996.

Past major projects include :
Woodford Prison, Sir David Longlands Prison, Lotus Glen Prison, Wacol Prison, Gatton Prison, Townsville Youth Correction Centre, Kempsey Prison, New Acacia Prison, West Kimberley Prison, Christmas Island Detention Centre.

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