This medium quality non-stick aluminum square pan is an Italian product, 6cm high and costs only €30!
Nominal outer edge: 20cm , effective: 22cm . Inner edge: 19.5cm .
Outer edge nominal: 25cm , effective: 25.7cm . Inner edge: 23cm .
Outer edge nominal: 30cm , effective: 30.7cm . Inner edge: 28cm .
Outer edge nominal: 35cm , effective: 35.3cm . Inside border: 32.7cm x 30.5cm .
Outer edge nominal: 40cm , effective: 40.3cm . Inside border: 37.8cm x 35cm .
NB: exact measurements are listed above, the size of choice is nominal only.