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18x20x1/2 (17.75 x 19.75 x 0.38) Accumulair® Washable Synthetic Filter
- Synthetic 1/2 Inch Washable
- This durable, long-life filter is made of 100% polyester washable media that does not support microbial growth.
- The material does not contain an antimicrobial agent.
- The frame is made from sturdy, rust resistant aluminum channel.
- It has a low pressure-drop providing optimum air flow.
- 80-85% Efficiency for particles of 3 to 10 microns in size.
- MERV 5 rated filter.
- Replace every 2-3 years.
- Vacuum or wash every 30 days.
- Great for use in boats and other marine applications.
- A perfect filter for swamp coolers and areas with high moisture.
- Filters-NOW does not recommend washable filters for use in home HVAC units.
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