Authorized Home Environmental Dealer Freight: SPECIAL! Only $1.00 shipping for each internet order. (within the Continental USA) Space Baron Ducted Filter Replacements (MERV 8) $19.65 Space Baron Plus Ducted Filter Replacements (MERV 11) $25.02 Genuine Aprilaire Space-Gard Filters and Parts Genuine Trane/American Standard Perfect Fit Filters Genuine Honeywell Filters and Parts Filtrete 1550 Allergen Reduction 4" Ducted Filters $35.99 Comparable prices & efficiencies of our other air filters: - Comparison Chart For All of Our Residential Filters Our Space Baron filters are designed as third-party replacement filters (in MERV 8 or MERV 11) for: - Trion, Air Bear - Research Products, Space Gard - Honeywell - Trane, Perfect Fit - White Rogers - General Filter Filtera puts the "A" in filter! Call Filtera Toll-Free: (888) 933-0100 Monday - Friday 8:30 am to 5:00 pm central time