Measure more than the top opening
Record the narrowest width at the floor, middle and top of the intended cart. Include baseboards, cabinet trim, pipes and any uneven wall. Measure depth to the first obstruction and note outlets or valves you must keep accessible. A space that looks rectangular from above may narrow near the wheels.
Check the appliance instructions first
A gap beside a refrigerator, oven or other appliance may serve ventilation, service or operating requirements. Do not fill that gap simply because the arithmetic works. Use the appliance manufacturer's required clearances and the cart's placement restrictions. This guide and calculator do not approve installation beside a heat source.
Plan where the cart goes when open
Measure the floor area in front of the gap. Include the cart depth and the place where you stand to retrieve an item. Check dishwasher and cabinet doors in the position you use them. A cart that blocks another essential opening whenever it moves can make the kitchen harder to use.
Match shelf openings to the contents
Measure the largest bottle or container and compare shelf height, internal width and any retaining rails. Choose contents according to the product instructions and keep weight within each shelf's limit. Store frequently used objects where you can grasp them without tipping the cart or pulling a heavy item sideways.
Allow room for cleaning and servicing
Check whether you can remove the cart entirely to clean the gap and access the appliance. Floor transitions and rugs can affect rolling; follow the wheel and floor guidance. Confirm the exact cart model and size on the retailer listing because a similar-looking variant can have a different footprint.
Explore the format.

Yamazaki Tower Slim Cart
A format to investigate, not a confirmed fit for your room. Read the existing analysis and verify the selected model.
Read the model research →Sources & limits
The measurement process and numerical examples are our original planning guidance. Examples are not specifications for the featured products. The linked manufacturer pages are references for verifying a particular model; confirm its current instructions and exact retailer variant before ordering. We have not physically tested these products.
Related model analyses may contain affiliate links. See our affiliate disclosure and research approach.