Tennant 1037207AM Panel Filter For Models6400 6400D 6400E Re-Nu Parts & Equipment: For all your cleaning equipment needs. at With over 30 years of experience working within the janitorial supply industry Re-Nu Parts & Equipment is focused on providing our customer with the best service and equipment possible. The only transactions we believe to be successful are when seller and buyer are 100%25 satisfied. Refunds will only be given in cases where an item was described inaccurately.