Here is a pic of the front corner and a picture of the roof sections showing how they join at the ridge. There are no screws securing the roof panels, they simply fit into the frame snuggly.
Okay, to take the mausoleum apart, the first thing I do is pop off the two roof panels. Each one is independent and just rests snuggly in place. No screws.
Next, I remove the three screws from each corner and start to remove the four upright panels.
Here are some close-up pictures of the corners so you can see how they meet. This overlapping is an important part of the build as it allows the wooden framework to be concealed.
After I unscrew the corner screws, the four panels come apart very easily. Here’s a shot of the four panels apart. The two side panels are 5’ x 5”. (ignore the pink playhouse in the background, it is not a prop

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The final step is to gently stack the various sections one on top of another. I put the two roof sections on the very top. The whole mausoleum, when stacked, is about 1 foot high.
So, that’s it! The whole process takes about 5 minutes from start to finish. The collapsed mausoleum can easily slip into a garage or under a deck. You could even put it in a shed as long as the shed is either 7 feet tall or 7 feet deep.