approx 65 sq mts ditra mat .
It was fixed on top
Of an anhydrite screed for a day using tilemaster seta flex white adhesive to fix and top filled in with same adhesive .
There are remnants of adhesive on back but can still be used if fixed with 6 mm notch . Originally fixed with 4.5 mm notch
Don't know what it's worth of if anyone would be interested .I would not use it on a customer but I have no doubt it will do job it's meant to . There was a mix up on reading hygrometer on anhydrite so I took mat up just laid day before . I'm in Walton on Thames . Surrey .