Phresh pre-filter socks use a proprietary fibre count/density dacron fabric that breathes up to 50% better than off the shelf Dacron. Phresh pre filters have been tested to filter down to 50 microns which is twice as much as other off shelf dacrons. Protect your carbon filter and make sure it flows the maximum air to ensure a cool, well ventilated room.

Phresh In-take Pre-Filter Sock 150 x 300 mm

Phresh In-take Pre-Filter Sock 200 x 300 mm

Phresh In-take Pre-Filter Sock 250 x 400 mm