This Poly-Flo Washable 25x28x1 durable, long-life filter is made of 100% polypropelene washable media that does not support microbial growth.
Great for use in boats. Ideal for places with limited storage space. A perfect filter for swamp coolers.
Actual Dimensions: Approximately 24-3/4" x 27-3/4" x 7/8"
Nominal Dimensions: 25x28x1
All systems that use size 25x28x1
Efficiency Rating: MERV 5 estimated
Other Stock Numbers: GS25X28X1