Adapter 8 internal 81x90

Adapter with flange that is attached to external grilles #150 mm and 110 x 150 mm with snap fastener, plus vents TL-E and TL-P. The adapters fit inside module pipes and external adapter in the respective dimension. The rain-protected variants (rs) have a small partition from the bottom edge and a bit up. This effectively stops any incoming water. The short variants are primarily intended for sound-absorbent lead-through. They expose as much of the pipe insulation as possible.