Pipe ID flow to the arrow sticker Reflective Film Fire Wire Pipe Exhaust Air Blast Air Return Air Air Agitation Air Conditioning Cooling Freezing Argon Helium Pure Steam Hot Water Pipe Custom Made
(Reflective Film Sticker) Exhaust Gas Out (Reflective Film Sticker) Air Supply (Reflective Film Sticker) Fresh Wind (Reflective Film Sticker) Return Air (Reflective Film Sticker) Empty