6pc Fire Sprinkler Head Pendent Type, 155℉ Fire Sprinkler Heads 1/2" Inch Thread 68°C Quick Response Water Spray Down 1/2" NPT for Home/Commericial/Workshop/Residential Building (Pendent Type) (6)

Installed them in my work shop. I think it would be better if I didn't have to find out if they work or not.

Way too small.

Not UL listed.

These fire sprinklers are not certified to use in the United States. This means they have not been tested or listed to any product specifications recognized by the US codes and standards. They will not operate as intended or desired.

These are not a quick response type, nor are they UL listed. If you were to have a fire. These would not be covered nor will they help your insurance claim

Sprinkler heads have to be UL Listed. These are junk that is illegal in the US.

Good product and fast shipping.