Looking for Small Fortic Tank

[Fer Obbree]

I am looking for a small fortic tank similar to the one pictured below,
its fed by electric only, no idea of make, the sticker on the side of cylinder is not relevant.
Its Dimensions are approx 300mm wide x 900mm high, the heater is in the base as well as draw off point and d/off.
I've tried Plumb Center and Google to try and find one but can only find the regular sized ones which are too big, has anyone ever seen one this size?
This one bolts to the wall.
The other option of unvented is a bit unpractical as its 3 floors up and getting a blow off pipe outside is not practical, would be far easier if I could get a direct replacement, it looks like its manufactured from around the early seventies, any info would be gratefully received.

 

[stevetheplumber]

last resort use a 5ftx1ft cylinder and mount a 25 gallon tank above

 

[Fer Obbree]

Sorry for not replying sooner, too many frozen pipes!, thanks for the info

 

[oldplumber]

why do want a fortic!!??? I would never suggest a customer would need want one, lets go modern and have an unvented cylinder with its better pressures available, and the equivalent sized direct unvented cylinder will give you more hot water than a small fortic cos u dont waste space with a cw cylinder on top.

 

[Fer Obbree]

Thought about unvented but getting the blow-off out is a real pain, cylinder is 3 floors up and about 10 metres in, we've now found a similar unit that will be far easier to fit, thanks for replying.