You need to change the filter MORE than twice a year on an 1 inch filter. Should be changed every 4-6 weeks! Also, stay with the basic "green 4/6" rating. Anything above that is hard on your equipment blower since it chokes on the air flow.. If you must to remove from the air, have your HVAC dealer ......

We(JDS) are the manufacture to make all the specification of air filtration solution .we are committed to protecting people, processes and systems through the development and manufacturing of the highest quality air filters, filtration equipment and containment housings available today.（China air fi......

The prototype of air filter is a respirator that people use to protect their breathing. It is recorded that as early as the first century in Rome, masks made of coarse linen were used to protect people from mercury purification and for a long time afterwards.

How to use Manual Adhesive Dispenser Gun?

5PCS

15-20DAYS