Home > BROWSE STORES > AllergyBuyersClub > BRANDS > Boair BoAir Furnace and Air Cleaners Filter Mfc: BoAir Furnace filters and electrostatic air filters that are permanent and washable. How to Measure for the Right Size Filter (Note: Actual filter size is 3/8 less than all of the stated dimensions.) Part# BAEFFURN SKU: BAEFFURN Price: $79.95 Price Drop Alert   Buy Now   BoAir Electrostatic Furnace and Air Conditioner Filter- Custom Sizes Mfc: BoAir Furnace filters and electrostatic air filters that are permanent and washable. How to Measure for the Right Size Filter Please specify the custom size (WxHxD) that you require in the comments section of your order. Sizes are available up to 1200 sq. Part# BAEFCUS1 SKU: BAEFCUS1 Price: $99.95 Price Drop Alert   Buy Now   Note: Displayed Prices are subject to change without notice. Please Click on the Buy Now link in front of the item to check current price.