... press clear. Reasonable design could meet different sizes of fan, air inlet or window. It is easy to be assembled and with ... )50''DM-LT 1400*1400*2505936''DM-LT1150*0050*25027 Air-inlet on side wall 630*250*250 11 Different materials of ... frame including stainless steel and galvanized steel. henhouse light trap,air inlets,exhaust fans,cooling pad,circulating fan, poultry fan