The alwitra terrace grate is the ideal complement for roof areas covered with paving slabs installed on the proven alwitra paving slab supports PA 20 plus.
By turning the lift ring, the installation height (overall height of the paving above the waterproofing) is adjustable from approx. 67 – 90 mm in steps of 3 mm. For installation heights > 90 mm, additional lift rings are optionally available, providing for additional height of approx. 36 mm per ring.