Ducting get to cold?

My grow tent was getting to hot so i put 4 inch ducting on the 265cfm squirrel cage blower but on the side vent which pulls air and put the other to a air condition vent after a few minutes the ducting got really cold can it get to cold to where it could damage the light? idk might be a stupid ? just making sure

Whats you A/C Temp at?....I'd say anything below about 65 or so could shock the hot light...If you have the light running for a long time, let it get hot...then you have a sudden blast of cold air on it...it might shock the hot glass...Even then i wouldnt think that anything over 60f would shock it.