Filtrete NDP03-4S-4 Air Filter, Electrostatic, 4 in Thick, 25 in L, 20 in W, 12 MERV, 1550 MPR, 1/PK, Pack of 4 INDOOR TIMERS Female National Pipe Taper (NPT)

Female National Pipe Taper (NPT) threads on both ends for connecting to male pipes

Extra thick to provide added cushioning

Easy to install simply

lightweight design lets you take it anywhere

Filtrete NDP03-4S-4 Air Filter, Electrostatic, 4 in Thick, 25 in L, 20 in W, 12 MERV, 1550 MPR, 1/PK, Pack of 4 INDOOR TIMERS Female National Pipe Taper (NPT)Your home should be your sanctuary, starting with the air you breathe. Filtrete healthy living air filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high performance filters help improve your home's air quality. Unit: PK2 UPC: 076308871062 Model Number: NDP03 4S 4