Which Bent Pan Connector would be required?

[Possom]

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The above figure represents the plan view of the cistern and bowl of a toilet in the corner of a room. A bent pan connector will go from the back of the toilet to the left wall.

From the centre of the soil outlet to the surface of the internal side of the wall (shown by the red arrow) is a distance of 29.5cm.

With that being the case, which of the linked-to bent pan connectors below would be required?

I'm not sure if the lengths given in the descriptions are from the centre of the outlet to the end of the pipe, or alternatively the full length from end to end. Also, I'm not sure if I should be adding on the measurement for the thickness of the cavity wall, or does the pan connector go to the internal side of the wall only?

Thanks!

http://www.screwfix.com/p/mcalpine-wc-con8f-90-flexible-pan-connector-white-110mm/28262
http://www.screwfix.com/p/euroflo-zb38403db-90-long-flexible-pan-connector-white-110mm/5314r
http://www.screwfix.com/p/mcalpine-macfit-mac-8l-90-wc-long-pan-connector-white-90-112mm/95284
http://www.screwfix.com/p/mcalpine-wc-con8-90-wc-pan-connector-white-110mm/7102p
http://www.screwfix.com/p/mcalpine-wc-con8e-90-wc-pan-connector-white-110mm/6214p
http://www.screwfix.com/p/floplast-...te/15330#product_additional_details_container

http://www.homebase.co.uk/en/homebaseuk/pan-connector---90-degree-380969
http://www.homebase.co.uk/en/homebaseuk/90-degree-wc-pan-connector-318923

 

[Newboy]

Extend the rigid soil pipe from the stack through the cavity wall as close to the WC position as possible then use http://www.screwfix.com/p/mcalpine-macfit-mac-8-90-wc-short-pan-connector-white-90-112mm/89461 ensure that the soil pipe is well supported (clips)

If you have enough space then bring the rigid soil pipe to the WC location then a bend (http://www.screwfix.com/p/floplast-sp561g-92-5-bend-double-socket-grey/17584) and a straight pan connector into a stub of soil pipe in the elbow

 

[Possom]

Thanks newboy. So it seems to be better to have as much rigid soil between the pan and wall as possible and reduce the amount of pan connector pipe as much as possible.

 

[Newboy]

That's the idea