I have installed 3 systems in the past few months, a 400 x 400, 600 x 600 and a 300 x 1200.These are very expensive systems so, you would think they could provide a basic cardboard cut out template. They do but only with the 400 x 400. All others you need to make your own.The panel's are nice and thin, but the screws on the back of the panel means depth is greater than 10mm plasterboard. If you strike a ceiling joists, then your will need to check that out. It its in the same position as a spring mount you will need to replace this. There is not advice on how to do this to ensure you don't damage the panel.The spring mounts are extremely strong, more than they need to be. So, when your trying to install any size larger than 400 x 400, you have two battle with ... MoreI have installed 3 systems in the past few months, a 400 x 400, 600 x 600 and a 300 x 1200.These are very expensive systems so, you would think they could provide a basic cardboard cut out template. They do but only with the 400 x 400. All others you need to make your own.The panel's are nice and thin, but the screws on the back of the panel means depth is greater than 10mm plasterboard. If you strike a ceiling joists, then your will need to check that out. It its in the same position as a spring mount you will need to replace this. There is not advice on how to do this to ensure you don't damage the panel.The spring mounts are extremely strong, more than they need to be. So, when your trying to install any size larger than 400 x 400, you have two battle with a min of 6 spring clamps with no method or recommendation in being able to hold them open when fitting the panel. If you need to remove the panel to adjust your cut, then be away that you only get a couple of go's before being at risk that the spring clips will pull the plasterboard out. The 1200 light took 3 people on ladders to manage the clips in order to install it.,Today I installed another 400 x 400 panel. I struck 3 joist and 2 infills. It looks 1.5hrs to prepare the opening. And if you veiling is not 100% dead level then be prepared to run a cap filler around the light edges.The 400 x 400 panel has a fixed cable to the solar panel, so it will need to be installed first then run the cable to the light.All panels above have a thick figure 8 cable with a connector. You need to factor this in when running the cables and how it will exit through the roof.If you're paying somebody to do the install, then you could be up for several hours of labour on top of the purchase price. I have had genuine top of the range solar tubes installed at $900 each. there wouldn't be much difference in total cost if you had the option between the two systems.

The Illume skylights are great.Our bedroom was dark because of a lovely tree near the window, which we do not want to cut down.The Illume skylight has completely lighted the room, giving it a light and airy feel.There is no cutting into the roof, so no leaks and no heat. The ceiling inside is cut so the light fits flush.I think they're better than traditional skylights and the cost is way way less.We're getting more of these.Just to let you know that the light they produce is a cool light.

Installed this in our hallway to brighten it up. Works as described, dimming as the day starts/ends. Even on heavy cloudy days it lights up. Super easy installation (plug n play) plus looks amazing with its flush mount fitting.