Vlookup from multiple criteria to display nearest answer - arrays

Question

I was hoping someone can help me. I have hit a solid wall.
I have a table with product information included and I am building a calculator which should spit out a number of options based on set criteria which is in the table. I am failing at just pulling through a code. I feel rather embarassed asking about how to do a vlookup here. But basically I have a vlookup which depends on multiple criteria and for the calc to cough out the nearest match (if applicable) based on this criteria.
Criteria 1 = Product
Criteria 2 = Type
Criteria 3 = Height
Criteria 4 = Min
I have created a search key in the table to concatenate all of these columns and then done a vlookup, which is =Vlookup(Criteria1 & Criteria2 & Criteria3 & Criteria4, Table Data, Code Required) But this does not appear to be giving me results, it either coughs out an error or the incorrect product. Below is my data and my calc I am hoping to complete. Can someone please help?

Answer 1

Here is an example looking for a closest match on Min. It demonstrates the principle so you can extend.
The closest match formula part is:
MATCH(MIN(ABS(E2:E4-K2)),ABS(E2:E4-K2),0))
Column E for column with Min values in. And K2 for target Min. This is an array formula entered with Ctrl + Shift+Enter. You would adjust the range of E2:E4.
The multiple criteria part is using:
=MATCH(lookup_value_1&lookup_value_2&lookup_value_3, lookup_array_1&lookup_array_2&lookup_array_3, match_type)
Where you are concantenating your parameters and searching for a match of the concatenation of those parameters in the table (you could do this against the key column if the key is made up of the same parameters.)
Overall formula with some test data (using one estimate figure):
=INDEX(F:F,MATCH(K1&K5&J5&INDEX(E2:E4,MATCH(MIN(ABS(E2:E4-K2)),ABS(E2:E4-K2),0)),B:B&C:C&D:D&E:E,0))
Above entered combined formula remember is an array formula so entered with Ctrl+Shift+Enter . You can reduce the ranges from entire columns to only those rows holding data.
Data data:
I am not typing all that out from picture so here is a quick n dirty

Answer 2

I tried with the QHarr's solution but it didn't work with all the rows.
My solution is:
Add a column with:
=IF(E2 < $K$2, E2, 0) and copy for all rows
In L5 create the formula:
{=INDEX(F2:F19,MATCH($K$1&K5&$J$5&INDEX(E2:E19,MATCH(MAX(SI(B2:B19=$K$1,1,0)*IF(C2:C19=K5,1,0)*IF(D2:D19=$J$5,1,0)*G2:G19,0),E2:E19,0)),B2:B19&C2:C19&D2:D19&E2:E19,0))}
Copy the formula to L6 and L7
Excel exercise printscreen

Answer 3

Originally marked this as answered and it did work initially but as I added more products it began to fail. I did manage to (after much trial and error) find a simple solution {=INDEX(Calc!$I$2:$I$189,MATCH(Output!$H$7,IF(Calc!$B$2:$B$189=Output!A12,Calc!$H$2:$H$189),1))}