Look up column value and display row values

Load each of the tables to Power Query Editor and then join them with an outer join as shown in the Mcode below.

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Excel 2016 (Windows) 32 bit

	B	C	D	E	F	G	H
1	DESCRIPTION	QTY.1	DRAWING	SYSTEM	AREA	PHASE	CSI TASK CODE
2	4S BOX	10	E-101	NORMAL POWER	B	2	410.2
3	CADDY CLIP	120	E-102	LIGHTING	C	3	110.1
4	4S BOX	10	E-101	NORMAL POWER	B	2	410.2
5	CADDY CLIP	120	E-102	LIGHTING	C	3	110.1
6	1 5/8 STRUT	45	E-101	NORMAL POWER	B	2	510.2

Sheet: ITEM BREAKDOWN

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Just noticed a duplication. Looking at that and will post correction. This happens because each of the duplicated items are part of the Name item in the Devices table. Perhaps you should show us a mocked up solution of what you want versus what I have supplied.

Sorry about that first time posting. So I manually did the steps and colored them so its easier to follow each of the items. In the take off there will be many items that are duplicate names but the difference will be in the other columns such as a different sheet, area, task code. The devices tab is what each instance of the item will be comprised of and I thought it would need the name for each line so I put that there. Item breakdown tab will grab all the assemblies (single takeoff item with multiple entries) and bring in the description from devices and qty along with its other info from takeoff the multiplier will be from takeoff, after this the itemized assembly will be the normal takeoff items along with the item breakdown. I kept it in the same order for clarity but that is not important as it will be queried with trade services tab and the result put into calculated list tab.

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