DwyerMagnehelic® Differential Pressure Gage, 2002AV, Dual Scale 0 to 2.0" w.c. & 1000 to 5600 FPM

No more guessing if your AC filter needs replacing. This is the way to know for sure!

Its a magnehelic.. What more can you say about. dwyer makes good products.. I think theyre better than the electronic cheap junk that u pay 200 dollars. Not really getting it cheaper through amazon but free shippings better than ordering it through dwyers website.

Great product Great Value. Thanks

Worked perfectly, all necessary adaptors included.

Great product. Well built.