Which lug bolts and plugs?

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Hi everyone. I'm building a floating desk for my PC which is 2.9 metres long and 600mm wide. The frame (made out of 63x38 CLS timber, with 3x2 planed timber on top which will be the desktop) will be fastened to 3 walls, 2 of which are breezeblock which have been dot and dabbed and plastered. My question is what are the best lug bolts and plugs to use to fasten the CLS to the breezeblock wall? Should I put said plugs in flush to the plasterboard and into the blocks or put them through the frame and then into the plasterboard and blocks? I was thinking about using the Fischer DuoPower 10x80, would this be alright?
 
Those look like what I need, thanks. Would the plug not be too long as I am fastening 38mm thick CLS to the wall and the screw would possibly only go roughly 40 odd mil (depending on the gap between the back of the plasterboard and the face of the wall) into the plug , or would I get away with it? I would have thought that I need a shorter plug but they only seem to do 100mm or 120mm.
 
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I would just use concrete screws no plugs required.
(To be a floating desk it would be fixed to one wall only with no visible fixings)
 
I would just use concrete screws no plugs required.
(To be a floating desk it would be fixed to one wall only with no visible fixings)
Concrete screws in breezeblock, really? I would have thought the blocks would have been too soft for that. I'm no expert though. I see what you mean about floating, I just meant that there won't be any legs, and the frame will be painted white like the walls, so the floating desktop part will be more illusion based ;)
 
Concrete screws in breezeblock, really? I would have thought the blocks would have been too soft for that. I'm no expert though. I see what you mean about floating, I just meant that there won't be any legs, and the frame will be painted white like the walls, so the floating desktop part will be more illusion based ;)
Did you mean thermolite blocks? They are soft .
 

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