We have one wall which is a three panel patio door (two glass side panels and one door in the middle, that opens inwards into the room) I suppose our best bet is to order 3 narrow blinds that we put up next to each other, Is there anything else you recommend in that situation?
Please find my recommendations below.
Fitting the blinds outside X? aesthetically and practically in my opinion will not work or be pleasing on the eye, you still will only be able to open the door to the edge of the recess with blind down, and it will also make the room feel smaller.
Unless you make the door blind very narrow glass width only so you can fully open the door then drop it down. This would not be my chosen option, but it's entirely up to you. I would install as below - see how it works and if you still have issues with the sun with the door open you will need to get some kind of fly screen that hooks inside the door opening.
So to make this work…
(1) Measure where shown top of recess to floor order blind as (exact) i.e. we make no further deductions in manufacture for clearance controls left.
(2) Door - check gap behind handle to door frame - hopefully it is more that 25mm if not you have a problem. The blind needs to drop behind the handle. Measure distance from glass to handle back plate (4) repeat the other side so blind is central about the handle, i.e. if it's 3cm to back plate measure glass then add 6cm to width order as (exact) controls left, select door hold down brackets in shopping cart this fixes to the base rail to stop blind swing around.
(3) Measure where shown top of recess to floor order blind as (exact) i.e. we make no further deductions in manufacture for clearance controls right.
Select face fix swivel brackets for all three blinds.
I have provided thee quick links below to the pages you will need. For standard windows measure width and drop in three places note down the smallest measurement order blinds as (recess) i.e. we will deduct 1cm from the width in manufacture for clearance.
Top fix blinds just in front of your hands so set back inside the windows.