How to search within min/max fields range?

I'm trying to create an exposed filter that would search within the range of 2 cck fields (both are set as decimal; one is called "minimum size" and other is "maximum size") user types in a SINGLE value which would show the results of any node that is in the range of the "minimum size" and "maximum size".

Basically, I'm doing a compatibility search.

I need to search within the compatible size range.

So the range is as follows: "minimum size" and "maximum size"
("minimum size" is it's own CCK field (decimal), and so is "Maximum size")

The user would input a SINGLE value of whatever size they have and it will search within the above range.

i.e. has to be equal or greater than the min size and equal or less than the max size

Example:

Product Alpha has Compatible Range of 1.2in(min) - 1.5in(max)

Product Delta has Compatible Range of 1.6in(min) - 1.7(max)

User types in a single value: 1.4

Product Alpha should be displayed.

Other info:

I'm using 3 CCK fields that work in this calculation:

- the exact dimension (type: decimal)
- the lowest compatible dimension (computed field that adds -5% to the exact dimension; type: decimal)
- the highest compatible dimension (computed field that adds +5% to the exact dimension; type: decimal)