Can be used as a substitute for the anti-microbial pad HC26E1004.?� Also, can replace all Aprilaire humidifiers that use a #35 pad (i.e., 560, 600, 700, 760...)
Change every year...twice a year if you have hard water!?� Left over deposits cause the water to "channel" thru the media and not disperse as well as it should, affecting evaporative capacity.
