Jordan is installing a 36"w x 24"h side hinge egress window in her basement. From the outside of his house, the top of this window will sit 8" above the ground level, leaving 16" of the window "below ground". Jordan needs a window well.
Based on this, Jordan's window well must be at least 20" deep (16" for the window itself, and 4" of space for drainage stone). Since the Great Egress Co's window well modules come in 12" height increments, Jordan will need to stack 2 modules to reach the needed depth.
Jordan's window is 36" wide and she knows that the well should be at least 4" wider than the window, meaning the window well must be at least 40" wide. Jordan looks at the well width options and sees that 42" is the next closest facing width size available.
As Jordan lives in Ontario, the well must have a projection of at least 21.75" to meet egress code. She would also like his window well to feel more open and have a natural step out to her garden. Since she needs 2 modules anyways to reach the necessary depth, Jordan will opt for the second (top) module to project 12" further than the first (bottom) one. She looks at the sizes available and selects a 24" projection for the bottom module and a 36" projection for the top module.