1. Purpose

Gathers exactly the sprinklers (SK) before running batch commands like ASKPipe1, ASKPipe2, or Set DN by SK. Select a messy mix of pipes, lights, ceilings — this command shrinks the selection down to SKs only, including SKs inside groups.

2. Quick video (≤ 2 minutes)

[Video in production — follow the steps below for now.]

3. Steps

Select the area containing sprinklers (select generously, other objects may be included). [image 01: mixed-object selection]
Run the FilterSK command (the SK filter — the current build has no dedicated ribbon button for it).
The selection shrinks to sprinklers only, duplicates removed automatically. [image 02: post-filter selection with SKs only]
Continue with ASKPipe1, ASKPipe2, or Set DN by SK on this clean selection.

4. Real-world example

A floor plan has 60 sprinklers scattered inside typical-room groups, mixed with cable trays and ducts. Select the whole floor, then filter SK — the selection holds exactly the 60 SKs, ready for a batch ASKPipe1 run with no stray objects.

5. Common errors

Symptom	Fix
"Vui lòng chọn Elements."	Select at least 1 object before running the command
The selection is empty after filtering	The original selection had no sprinklers — check again
Grouped SKs missing from the selection	Rerun (the tool unpacks group members; verify the group really holds SKs)

6. See also

Connect many sprinklers along a direction (ASKPipe1) — run right after filtering.
Connect the farthest sprinkler (ASKPipe2) — run right after filtering.
Size the pipe by SK count — counts the filtered SKs to look up DN.