How fire sprinklers work. Your browser does not support the video tag. Previously: Infrared sensing directional fire sprinkler - GIF Fire sprinkler shut off tool - photo Gentleman tests fire sprinkler load capacity - GIF and photo Irrigation big gun sprinkler - GIF Centering ceiling fire sprinkler hole - GIF
New plans added on 11/22: Click here for 2,593 plans for homemade tools.
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