China square ceiling air diffuser with motorized opposed blade damper

[@SIGITSANTOSO-ez4bu]

size 12" x 12" how much price?

[@vairtech]

hi，dear.may i have your email or whatsapp to communication?

[@ashrafhajwane4964]

Hi, can you tell me once you close air from damper than what will happen to air pressure level at that diffuser outlet.

[@ashrafhajwane4964]

Product is good but need some technical clarification on operation effects.