The MESA Self Levelling Joist Slope Corrector is the perfect accompaniment‚ to MESA Support Pedestals for tackling‚ sloping surfaces.‚ ‚ Fix on top of pedestals to correct slopes up to 5%. Please note the Joist Slope Corrector can only be used with MESA Support Pedestals ranging from heights‚ 19-595mm. (this does not include 10-40mm pedestal) Self correct slopes up to 5% Easy clip in system, adds 20mm height 90% recycled Polypropylene and 100%‚ recyclable Quick &‚ simple to install, saving you‚ over traditional supports 1 per pedestal‚  ‚