My advice on frame sleeves

[MathiasS]

If the frame has already been screwed in place, it is of course no longer straightforward, but this should be seen when initially fixing the frame and placing the bushings.

I use a socket like this in the drill during installation.

https://www.24mx.se/crosstillbehor/...3u_hvFyXcajEbp-IRDBoC41QQAvD_BwE&gclsrc=aw.ds

 

[bellman83]

If you have already started fastening the frame, it is, of course, no longer uncomplicated, but you should see this when you initially fix the frame and place the sleeve.

I use a socket like this in the screwdriver during assembly.

[link]

To clarify for future readers, the link describes an Allen key with a socket for a ratchet or similar, not a frame sleeve.

A similar tool is absolutely necessary to be able to rotate the frame sleeve and thereby adjust the frame.

 

[J Vos]

I didn't use plugs as I had aerated concrete screws that bite directly into the substrate. But they couldn't handle any readjustment so now I'll use narrow plugs that go through the hole in the frame sleeve.

As you say, nino, you want the threshold level, but isn't it OK to just place it on the slab if it is level?
As a novice, one would have wanted it clear that blocking and wedging should only be done if necessary.

You apply sealant under the threshold, since the weight of the frame sides can compress the sealant on the sides more than in the middle under the threshold, I usually place a plastic washer under the frame sides.

 

[nino]

If you are going to install several doors or if you have it as a job, then you might buy a box of each length, some different lengths and variants of screws, and some different thicknesses of washers.

If you're going to install a door, well then you can either remove the old frame and measure the hole and calculate what you need for equipment or you can buy 8 sleeves of each and maybe some washers in different thicknesses, preferably at a place where you can return what hasn't been used.