The Omnipure CL6ROT inline water filters contain granular activated carbon to reduce chlorine taste and odor. It is friction-welded together for reliable no-leak seal. 

These are used in ice machines, water coolers, drinking fountains, under the sink systems, and reverse osmosis systems.

Specifications:

**Interchangeably used with T28, T33 and T40

National Pipe Thread (NPT) Size Measured Against a Ruler*
 Actual Diameter
(Inches)
National Pipe Thread (NPT)
(Fractional)
0.405" 1/8"
0.540" 1/4"
0.675" 3/8"
0.840" 1/2"

*NOTE: A very common misconception is that a 1/4" NPT measures as 1/4 inch on a ruler or tape measurer. However, that is not the case.  NPT will measure larger in diameter.  Above is a sizing reference to help clarify.