Im wanting to build some shelving in the upstairs closet which is around 900x700mm. My aim was to put together something using 19x45 redwood around 3 sides and ply for the shelf, simple. However, im pretty confident there is there no studs on either wall for me to secure the supports onto. Who knows why there isnt but since when do new builds follow logic. There is some metal channel running straight up the centre of each wall and at the back corners as well as at the door architraves which is what my stud finder was picking up - a magnet however confirmed otherwise. There is no light switch in the closet nor is there a switch on the left wall of the adjoining bathroom. The bathroom has a tub located where the closet recesses in, and the taps are on the far end, doubt there is pipes on the closet back wall. Im a bit hesitant to go down the metal cavity wall anchors route e.g. these which i used for the TV but i also screwed into studs. In fairness i used M5's for the curtain poles and they are solid. But for shelving...? Anyway thoughts on best approach to go about this....use battens from the floor 3/4 of the way up on each corner using the anchors to secure them onto the drywall, and have noggins spaced horizontally and vertically to take the shelves? some pics to make things a bit clearer: This is the channel im sure im picking up near the architraves, this is from another room. closet recess into bathroom. closet.