Answer
May 01, 2023 - 03:10 PM
A 3R rated version of the Seifert 4421A3003 cabinet fan filter assembly would be the Fandis FF13PA115NF53. The Fandis FF13PA115NF53 is the same size, color, and voltage, and is Type 3R according to UL 508 standard. The Fandis FF13N53 would be the 204 mm stand-alone filter assembly (without a fan), and Seifert 400020100 is a set of 6 spare filter media.
