Baffle Box Lining Advice for Europe

[Funky Animal]

I've been on Google, and this forum for the past months searching for duct line for my baffle boxes.
On GS I've seen Rod Gervais advicing Linacoustic R-300 as lining for inside the baffle box.

Unfortunatelly that's not available here. So I had to go through a ton of searching to find something suitable available here in Europe and even preferably in the Netherlands.

I've found the products of Merford, and apparently their Akotherm Basic is suitable for lining baffle boxes, according to them.
The question now is, is the acoustical performance good enough for my baffle boxes?

Here's a PDF link (https://www.akoestiekwinkel.nl/pub/medi ... _d40_1.pdf), it's in Dutch so the specs are listed in the screenshot underneath.

D40 = Density 40kg/m3
the 25 after it is thickness in MM

From the info I gathered, and compared to other lining, this seems to be ok, but I just want to make sure I'm not making any mistakes here.

[atomicus]

I used this one myself, was recommended on here by someone;

https://www.advancedacoustics-uk.com/Cl ... Foam-Panel

[Funky Animal]

I used this one myself, was recommended on here by someone;

https://www.advancedacoustics-uk.com/Cl ... Foam-Panel

Yup, I read through your thread. Looking at the numbers, my stuff would be also good for this.

Thanks, you already have your ventilation finished?

[atomicus]

I used this one myself, was recommended on here by someone;

https://www.advancedacoustics-uk.com/Cl ... Foam-Panel

Yup, I read through your thread. Looking at the numbers, my stuff would be also good for this.

Thanks, you already have your ventilation finished?

It's easy stuff to work with I found. Not sure if yours is same, but I imagine will be similar.

My baffle boxes are all done, but yet to actually get everything in place and up and running. Hoping to get it all done in next month or so.