Yeah Ive read a half to a 3rd of floor space so the 33l rub is 710mm in length so a 3rd of that would be 236.6mm (23-24cm) and the width is 440mm (44cm)
so Im needing one closest to 24cm x 44cm
so yeah the 20W ones are 43cm x 28cm thats the closest I cna see
Also... say i am wanting to hook a couple of mats to one thermo. say my thermo is 100w - and say I buy the 20w mat does that mean I can have 5 mats hooked up to one thermo because 5x 20w = 100w
I read you can hook up more than one mat per thermo but others just buy seperate thermos