Internal fit 100/117mm vent kit

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Hi peeps,

Anyone know of a manufacturer of a 100/117mm internal fit wall vent kit, needs to do a 650mm wall though, most seem to do 390 mm max.

Thanks in advance.

 
no idea on internal fit, but what i often do is drill the hole, throw a rope out and use that to pull up the duct / vent in through the hole. you can get 1m lengths of duct from screwfix

 
no idea on internal fit, but what i often do is drill the hole, throw a rope out and use that to pull up the duct / vent in through the hole. you can get 1m lengths of duct from screwfix
And wherever possible use a circular external grille 😂Much easier than squaring up a rectangular one

 
And wherever possible use a circular external grille 😂Much easier than squaring up a rectangular one
Theres a good idea from two members ...........     push a rope through the hole , tie a CIRCULAR grille   with a load of mastic on it ,   pull it up , reach through and stick it to the wall  without any ladder work. 

 
If you only have a square external grill, mark the internal end of the duct with horizontal lines so you can level it from inside.

 
use flexible duct instead. you can get a vent to almost anywhere from the inside with a bit rope, even if its above a roof (as long as you can get to the rope, use a cable rod if necessary to pull it twards you

 
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