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Filter Shipping has allergy filters for your air cleaner. We carry OEM and generic brand expandable filters to fit your needs and save you money. Make sure when upgrading to an allergy grade filter to check if your furnace or air conditioner is capable of handling the increased stress. Sort By: Price: Low to High Price: High to Low Most Popular Title Manufacturer Newest Oldest Availability 30 per page 60 per page 120 per page 180 per page 300 per page Page of 1 Aprilaire 210 MERV 11 (2 Pack) Our Price: $110.00 (4) Aprilaire 210 MERV 11 Expandable Filter Our Price: $60.00 (8) Aprilaire 310 MERV 11 Expandable Filter Our Price: $63.00 (5) Aprilaire 210 Expandable Filter (2 PACK) Nominal Expanded Size: 20" x 25" x 4" Exact Collapsed Size: 26" x 4" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 210 Expandable Filter Nominal Expanded Size: 20" x 25" x 4" Exact Collapsed Size: 26" x 4" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 310 Expandable Filter Nominal Expanded Size: 19" x 20" x 4" Exact Collapsed Size: 20" x 4" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 310 MERV 11 Expandable Filter 2 PACK Our Price: $121.00 Aprilaire 610 MERV 11 Expandable Filter Our Price: $61.00 Aprilaire 610 MERV 11 Expandable Filter (2 Pack) Our Price: $114.00 Aprilaire 310 (2 Pack) Expandable Filter Nominal Expanded Size: 19" x 20" x 4" Exact Collapsed Size: 20" x 4" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 610 Expandable Filter Nominal Expanded Size: 16"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 610 (2 Pack) Expandable Filter Nominal Expanded Size: 16"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 613 MERV 13 Expandable Filter (2 Pack) Our Price: $109.00 (2) Aprilaire 810 MERV 11 Expandable Filter Our Price: $65.00 (3) Aprilaire 813 MERV 13 Expandable Filter Our Price: $67.00 Aprilaire 613 (2 Pack) Expandable Filter Nominal Expanded Size: 16"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 13 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 810 Expandable Filter Nominal Expanded Size: 20"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 11 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 813 Expandable Filter Nominal Expanded Size: 20"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 13 Expected Duration: 6 to 12 months Allergen Grade: Basic Aprilaire 813 MERV 13 Expandable Filter (2 Pack) Our Price: $130.00 Trane Quikbox Filters FLRQB5AH21M11 (2 Pack) Our Price: $95.00 Trane Quikbox Filters FLRQB5AH23M11 (2 Pack) Our Price: $99.00 Aprilaire 813 (2 Pack) Expandable Filter Nominal Expanded Size: 20"" x 25"" x 4"" Exact Collapsed Size: 26"" x 4.25"" Filter Rating: MERV 13 Expected Duration: 6 to 12 months Allergen Grade: Basic NEW Part # FLRQB5AH21M11 -Old Part # BAYFTAH21M2 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months Trane Quikbox Filters FLRQB5AH26M11 (2 Pack) Our Price: $100.00 Trane Quikbox Filters FLRQB5DN17M11 (2 Pack) Our Price: $100.00 Trane Quikbox Filters FLRQB5FR17M11 (2 Pack) Our Price: $85.00 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months NEW Part # FLRQB5DN17M11 - OLD Part # BAYFTFR17M2 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months NEW Part # FLRQB5FR17M11 - OLD Part # BAYFTFR17M2 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months Trane Quikbox Filters FLRQB5FR21M11 (2 Pack) Our Price: $92.00 Trane Quikbox Filters FLRQB5FR24M11 (2 Pack) Our Price: $92.00 NEW Part # FLRQB5FR21M11 - OLD Part # BAYFTFR21M2 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months NEW Part # FLRQB5FR24M11 - OLD Part # BAYFTFR24M2 Trane Quikbox Media Filter Merv 11 Duration: Up to 6 Months