Browse Forums Heating, Cooling & Insulation 1 Feb 27, 2020 7:43 pm I am trying to find a place for my return air that is out of the way. I've found a spot that backs onto a bedroom wardrobe. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ There is about 400 mm of space for the return air box. The current size of the box that was already in the house is 600mm x 400mm. The diameter of the duct is 350mm. Because the diameter of the duct is only 350mm, is it necessary for the box to be any bigger? My thinking is that if the duct only has space for 350mm, then why is a bigger box necessary? Building Standards; Getting It Right! 1. optional, you can but normally just use the earth from the main switch board 2. should be enough but the distance determines voltage drop - sparky should work it… 1 28761 I brought terry road box hill in June 2022 House was meant to be completed Nov 2023 That did not happen I had to chase them so much to the land Registration and… 0 2403 |