ABSCO INDUSTRIES Page 1 MARCH 17INSTRUCTION MANUALJ23083BKFastening to a concrete slab is highly recommended for optimal panel alignment andcorrect functionality of moving parts.A recess (75mm wide x 25mm deep) around the perimeter of the concrete slab isrecommended to minimise water ingress.Further details about securing this product to the ground are on page 24 of this manual.