Overview Product Description Filter Housing Lid for older Aquamiser+ or MAX Q+ systems (units sold from 1/01/10 to 2/01/22) that have a body housing part number 21-2226 157mm diameter. Replace as needed. Product Videos Custom Field Product Reviews Write a Review Write a Review × FCI FCI Filter Housing Lid 21-4189 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments