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Mixed
Flat
Pictograms vol.1
warning, danger, exclamation
CornflowerBlue
137x512
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Outline
Interface
exclamation, danger, interface
Black
512x512
Miscellaneous
Fire extinguisher, safety, fire
danger, miscellaneous, explode
Mayssam
cross, danger, Trash
Error, Alert, danger
forbidden, off, danger
Glyph
Basic icon element
danger, warning, safety
Free Misc Icon Set 2
Alert, problem, exclamation
Error, sign, fill
bitsies!
fault, problem, Error
Amenities - Outline
light, fire, Extinguisher
Amenities - Solid
Extinguisher, Burn, Flame
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Krispicons- Modern Flat Icons Freebie
Attention, danger, Caution
Firebrick
111x111
Handdrawn
Social Messaging & Productivity
danger, Attention, Error
Fire
walking, danger, fire
Crimson
fire, Damage, danger
fire, Break, glass
bell, danger, problem
Simple darkcon
warning, Error, skull
324x512
problem, warning, Caution
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3D
I like buttons
cute, Info, Ball
RoyalBlue
128x128