Hint P3 - Alternative to Square Panel large
Model instructions from some earlier K'NEX sets include one or more "Square Panel Large", as shown in the photo.
The Square Panel large is no longer available to buy as a part.
However, as an alternative, each Square Panel large can usually be replaced in the model by the part combination shown in the photo opposite, which includes:
4 x Tri Panel medium
1 x 8-way connector (or 7-way connector)
4 x 3-way connector (or any connector more than 3-way)