Below the cooktop, I'd put a false front whose height (for example) matched that of silverware and cutlery drawers elsewhere in the kitchen. Below that, I'd put two pullout drawers -- one above the other -- for cookware whose depth, when closed, was reduced to prevent them from hitting the downdraft hood's blower box (see page 11 of the Installation Instructions) at the rear of the cabinet. Example:

There is no real storage room under there. You get about 9” of depth, unless you are increasing the cabint depth to better hold it all. Then add another 3”.

According to the downdraft installation instructions and the GE Profile PHP9036ST induction cooktop:

• Depth of cutout of cooktop plus downdraft = 19-1/4 + 2-1/8 = 21-3/8"
• Minimum counter depth = 19-1/4 + 2-1/2 + 2-1/2" = 23-1/4"

So the cooktop and downdraft would appear to fit within a standard 24"-deep base cabinet (though GE suggests pulling the base cabinet 3-5" forward when doing an against-the-wall installation - see page 13 of Installation Instructions).

• Maximum depth of drawers = 24 - 7-1/4 = 15-3/4"

@zumi: "You get about 9” of depth..."

How did you calculate a 9" drawer depth?

This is with the bulky blower in the basement. Only the duct is in the cabinet, but it’s a big enough obstacle. If the blower were housed in the cabinet, as is normal, there might be about 6”-9” of shelf space available. If you want to play Tetris.

"This is with the bulky blower in the basement. Only the duct is in the cabinet..."

Then it's not this GE downdraft which, including the blower box, is 7-1/4" deep. And you used shelves which are harder to reach.

Thanks, wdccruise, for answering specifically about the downdraft we are using. I have the same dimensions that you reference, and was hoping to see what people with the same exact setup have done. I think people are responding about different appliances with bulkier parts.

"I think people are responding about different appliances with bulkier parts."

Correct. The GE downdraft uses a slim, 3-1/4” x 10” duct. The commenter above may have used, for example, a 6" duct which would require more space at the rear of the cabinet.