Pack 24H shipping Home Frapol Onyx Sky 250 a complete set of effective replacement cartridges for recuperator... *Frapol Onyx Sky 250 efektywny zł121.20 A set of highly efficient, environmentally friendly anti-dust filter elements for the Frapol Onyx Sky 250 recuperator. Made of thick synthetic filtering fleece with progressively built-up polyester fibers, thermally joined and gradually thickening towards the air outlet side. They are distinguished by high efficiency thanks to a very large dust capacity... Add to cart