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97% of airborne allergens down to 01 microns in size, creating fresh and purified air for you and your family.
Easy to replace and disposable, no tools required. Plus 3 replaceable Pre-Filters for added value. Activated carbon filter removes heavy odors from pets, wildfire, smoke, cooking, and harmful VOC’s with the power of more than 0.80 lbs of high-efficiency activated carbon pellets.

Sleek design: fits perfectly in any space from small to large rooms. Blue = excellent, green = good, red = poor, Orange = Fair, Purple = Bad air quality high levels of particles. Sleepscore validated: incredibly quiet and tuned to generate a soothing pink noise for better rest.

Replacement air filter - for breathesmart 45i or breatheSmart Flex Air Purifiers ONLY.
Th13 true hepa: 3-stage h13 true HEPA filtration captures 99. 99% of particles as small as 01 microns. Find your model - look on the top of the panel of the unit to find the name on the Alen air purifier to insure correct fit for the air filter and model type. Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells.

Product 2: what it captures - seasonal allergies, Pollen, Dust, Dander & Pet Fur. Product 2: true hepa filter - basic air filter offers a medical grade H13 True HEPA layer that removes 99.
9% of mold & bacteria E. Product 2: replacement air filter - for breathesmart classic air purifiers ONLY. If you own any other BreatheSmart air purifier, find your model below to order the correct air filter. Product 2: long filter life - recommended to change filter once every 10-12 months, or dependent on usage. Coli, staph, black mold. Product 1: h13 true hepa: 3-stage h13 true hepa filtration captures 99. 99% of particles as small as 0

Product 1: kills germs and mold recommended for dust dander allergens pet fur odors PLUS bacteria and mold spores The Pure filter includes an compound that helps kill airborne germs bacteria fungi and viruses including the flu. Product 2: true hepa filter - pet odor filter made with a proprietary odor eliminating compound that destroys unwanted household odors at the molecular level.
True hepa filter to capture 99. 97% of airborne particles down to 0 Product 1: powerful & sleek cleans 800 sqft every 30 minutes circulates air up to 5 times an hour Sleek design fits in any space from small to extra large bedrooms living rooms offices nurseries kitchens and basements. Product 1: true hepa includes a high capacity hepa layer to capture 99 97% of airborne particles down to 0 3 microns True HEPA filters last 3-5 months longer than standard filters. Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells.

Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells. True hepa filters last 3-5 months longer than standard filters. Product 1: sleep mode: features a “lights out mode”, press the power button once and the lights turn off.
97% of airborne particles down to 0 True hepa-odorcell is the ultimate home air freshener filter! Product 2: long filter life - recommended to change filter once every 9-12 months, or dependent on usage. Product 2: what it captures - diaper bins odors, pet Dander, Teenager’s Room Smells, seasonal allergies, wet dog odors, dust, Pollen, cat litter odors, Dander & Pet Fur. Product 2: replacement air filter - for breathesmart 45i or breathesmart flex Air Purifiers ONLY.

Product 2: cleans air fast: cleans 700 sqft every 30 minutes, nurseries, offices, kitchens, living rooms, twice as fast as key competitors on Turbo speed. Sleepscore validated and users feel more rested upon waking.
Product 1: true hepa: includes a high capacity hepa layer to capture 99. 97% of airborne particles down to 03 microns. True hepa filters last 3-5 months longer than standard filters. Product 2: sleep mode: features a “lights out mode”, press the power button once and the lights turn off. Packed with activated carbon to absorb harmful airborne particles including smoke cooking, wildfire, and more. Product 2: fresh air: recommended for dust, voc’s, allergens, all while preventing the growth of mold and bacteria.

Product 1: recommended for: dust, allergens, household odors plUS smoke from cigarettes, pet dander, wildfires, fur, pollen, and VOC fumes from chemicals and aerosol sprays. Includes a vacuumable prefilter to help increase filter life.
Product 2: recommended for: dust, dander, living rooms, nurseries, offices, pet fur, kitchens, and odors. Blue = excellent, orange = fair, green = Good, Red = Poor, Purple = Bad air quality high levels of particles. Blue = excellent, red = poor, orange = fair, Green = Good, Purple = Bad air quality high levels of particles. Product 1: true hepa filter: includes a medical grade h13 true hepa layer that removes 99. 99% bacteria, aerosolized viruses, and airborne particles larger than 01 micron.
1. Alen
#ad
True HEPA Basic Filter for Allergies, Dust, Pollen, Alen Replacement Air Filter for BreatheSmart 45i or Flex, Dander and Fur
#adAlen #ad - Find your model number on the top panel below the power button. B4-pure filter: recommended for allergens and Asthma Triggers dust, Aerosolized Viruses, & mold Pollution, pollen, dander, and Bacteria.More information #ad
Part number: b4-pure old Part Number FL40-Pure. Replacement air filter - for breathesmart Flex & 45i Air Purifiers ONLY. Extra long filter life: Change Once Every 9-12 Months. H13 true hepa: 3-stage h13 true hepa filtration captures 99. 99% of particles as small as 01 microns.Brand | Alen #ad |
Manufacturer | Alen #ad |
Height | 15 Inches |
Length | 2 Inches |
Width | 11 Inches |
Part Number | B4-Pure |
Model | B4-Pure |
Warranty | Limited warranty. |
More information #ad
2. Flintar
#ad
Plus 3 Replaceable Pre-Filters, Part # B4-Fresh, Compatible with Alen BreatheSmart Flex and 45i Air Purifier, 1-Pack, Flintar True HEPA Replacement Filter, H13 Grade True HEPA
#adFlintar #ad - Contains one 1 3-stage h13 true hepa filtration system including pre-Filter, H13 Grade True HEPA Filter, and Activated Carbon Filter. Pre-filter traps larger particles in the air like dust, pet fur, hairs, lint and prolong the life of True HEPA Filter; Premium H13 Grade True HEPA Filter captures 99.97% of airborne allergens down to 01 microns in size, creating fresh and purified air for you and your family.
More information #ad
Replace true hepa filter set every 9-12 months and Pre-filter every 3 months for optimal performance. 100% satisfaction Guarantee. Compatible with alen breathesmart flex and 45i Air Purifier Only, Part # B4-Fresh Old Part # FL40-Silver-Carbon. Easy to replace and disposable, no tools required. Plus 3 replaceable Pre-Filters for added value. Activated carbon filter removes heavy odors from pets, wildfire, smoke, cooking, and harmful VOC’s with the power of more than 0.80 lbs of high-efficiency activated carbon pellets.
Brand | Flintar #ad |
Manufacturer | Flintar LLC #ad |
Part Number | B4-Fresh |
Warranty | Manufacturer's warranty for 90 days from purchase date. |
More information #ad
3. Alen
#ad
White, Alen Pure BreatheSmart 45i, Mold, Dust, Odor
#adAlen #ad - Includes a vacuumable prefilter to help increase filter life. 5 air quality colors: a laser smart sensor detects airborne particles and auto-adjusts with air quality changes.Sleek design: fits perfectly in any space from small to large rooms. Blue = excellent, green = good, red = poor, Orange = Fair, Purple = Bad air quality high levels of particles. Sleepscore validated: incredibly quiet and tuned to generate a soothing pink noise for better rest.
More information #ad
B4-pure filter: recommended for dust, allergens, pet dander, fur, pollen, and odors. True hepa filter: includes a medical grade h13 true hepa layer that captures 99. 99% bacteria, aerosolized viruses, and airborne particles larger than 01 micron. Sleepscore labs reported participants had improved sleep quality, reduced allergy symptoms, and felt more rested the morning.Brand | Alen #ad |
Manufacturer | Alen Corporation #ad |
Height | 25 Inches |
Length | 8.5 Inches |
Weight | 15 Pounds |
Width | 15 Inches |
Part Number | 45i-Pure |
Model | 45i-Pure |
Warranty | All alen's air purifiers include a warranty if used in the contiguous united states only. |
More information #ad
4. Alen
#ad
Odors/Pet Dander, Alen BreatheSmart 45i or Flex Pet Air purifier, Allergies/Dust Odors/Heavy Odors
#adAlen #ad - True hepa filter - pet odor filter made with a proprietary odor eliminating compound that destroys unwanted household odors at the molecular level. What it captures - diaper bins odors, dust, pet dander, seasonal allergies, wet dog odors, cat litter odors, Teenager’s Room Smells, pollen, Dander & Pet Fur.Replacement air filter - for breathesmart 45i or breatheSmart Flex Air Purifiers ONLY.
More information #ad
Long filter life - recommended to change filter once every 9-12 months, or dependent on usage. If you own any other BreatheSmart air purifier, find your model below to order the correct air filter. Th13 true hepa: 3-stage h13 true HEPA filtration captures 99. 99% of particles as small as 01 microns. Find your model - look on the top of the panel of the unit to find the name on the Alen air purifier to insure correct fit for the air filter and model type. Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells.
Brand | Alen #ad |
Height | 15 Inches |
Length | 11 Inches |
Weight | 3 Pounds |
Width | 2 Inches |
Part Number | FL40-Mega-Pet |
More information #ad
5. Alen
#ad
Dust, Alen Replacement Air Filter for BreatheSmart 45i or Flex & Replacement Air Filter for BreatheSmart Classic, Dander and Fur, True HEPA Basic Filter for Allergies, Pollen
#adAlen #ad - Find your model number on the top panel below the power button. Product 1: part number: b4-pure old Part Number FL40-Pure. Product 1: replacement air filter - for breathesmart flex & 45i air Purifiers ONLY. Product 1: b4-pure filter: recommended for allergens and Asthma Triggers dust, dander, & mold Pollution, pollen, Aerosolized Viruses, and Bacteria.Product 2: what it captures - seasonal allergies, Pollen, Dust, Dander & Pet Fur. Product 2: true hepa filter - basic air filter offers a medical grade H13 True HEPA layer that removes 99.
More information #ad
99% bacteria, aerosolized viruses, and airborne particles larger than 01 micron. Plus antimicrobial protection by eliminating 99. 9% of mold & bacteria E. Product 2: replacement air filter - for breathesmart classic air purifiers ONLY. If you own any other BreatheSmart air purifier, find your model below to order the correct air filter. Product 2: long filter life - recommended to change filter once every 10-12 months, or dependent on usage. Coli, staph, black mold. Product 1: h13 true hepa: 3-stage h13 true hepa filtration captures 99. 99% of particles as small as 0
Brand | Alen #ad |
More information #ad
6. Alen
#ad
Odors/Pet Dander, Allergies/Dust Odors/Heavy Odors, with HEPA Filter & BreatheSmart 45i or Flex Air purifier, 800 SqFt. Coverage Area, Alen BreatheSmart 45i HEPA Air Purifier for Rooms
#adAlen #ad - If you own any other BreatheSmart air purifier, find your model below to order the correct air filter. 3 microns. Product 2: replacement air filter - for breathesmart 45i or breathesmart flex Air Purifiers ONLY. Product 2: what it captures - diaper bins odors, wet dog odors, cat litter odors, Pollen, pet dander, Dust, Teenager’s Room Smells, seasonal allergies, Dander & Pet Fur.Product 1: kills germs and mold recommended for dust dander allergens pet fur odors PLUS bacteria and mold spores The Pure filter includes an compound that helps kill airborne germs bacteria fungi and viruses including the flu. Product 2: true hepa filter - pet odor filter made with a proprietary odor eliminating compound that destroys unwanted household odors at the molecular level.
More information #ad
Product 1: air quality light and sensor the power button changes colors instantly as the sensor detects the particles in the air Used on “auto mode” the sensor will adjust the speed of the fan to clean the air more effectively when a higher number of particles are present. True hepa filter to capture 99. 97% of airborne particles down to 0 Product 1: powerful & sleek cleans 800 sqft every 30 minutes circulates air up to 5 times an hour Sleek design fits in any space from small to extra large bedrooms living rooms offices nurseries kitchens and basements. Product 1: true hepa includes a high capacity hepa layer to capture 99 97% of airborne particles down to 0 3 microns True HEPA filters last 3-5 months longer than standard filters. Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells.
Brand | Alen #ad |
More information #ad
7. Alen
#ad
Alen BreatheSmart FLEX Air Purifier,H13 True HEPA for Large Rooms up to 700 Sqft, Odors/Pet Dander, Allergies/Dust Odors/Heavy Odors, White & BreatheSmart 45i or Flex Air purifier
#adAlen #ad - 3 microns. True hepa filter to capture 99. Sleek design fits in any space from small to extra large bedrooms, living rooms, kitchens, nurseries, and basements. Product 1: fresh air: recommended for dust, allergens, fur, household odors, household chemicals, dander, all while preventing the growth of mold and bacteria.Capable of tackling the toughest odors in your home, such as cat litter, puppy potty pads and even diaper smells. True hepa filters last 3-5 months longer than standard filters. Product 1: sleep mode: features a “lights out mode”, press the power button once and the lights turn off.
More information #ad
Product 1: cleans air fast: cleans 700 sqft every 30 minutes, offices, twice as fast as key competitors on Turbo speed. Sleepscore validated and users feel more rested upon waking. The fresh Filter is equipped with 066 lbs of activated carbon to absorb harmful airborne particles including smoke, VOC’s, and more. 97% of airborne particles down to 0 True hepa-odorcell is the ultimate home air freshener filter! Product 2: long filter life - recommended to change filter once every 9-12 months, or dependent on usage. Product 2: what it captures - diaper bins odors, pet Dander, Teenager’s Room Smells, seasonal allergies, wet dog odors, dust, Pollen, cat litter odors, Dander & Pet Fur. Product 2: replacement air filter - for breathesmart 45i or breathesmart flex Air Purifiers ONLY.
Brand | Alen #ad |
More information #ad
8. Alen
#ad
White, in White & BreatheSmart FLEX Air Purifier, H13 True HEPA for Large Rooms up to 700 Sqft, Alen BreatheSmart 45i Air Purifier with Smart Sensor for Large Rooms up to 800 Sqft
#adAlen #ad - Product 1: powerful & sleek: cleans 800 sqft every 30 minutes, nurseries, kitchens, living rooms, offices, circulates air up to 5 times an hour. The fresh Filter is equipped with 066 lbs of activated carbon to absorb harmful airborne particles including smoke, household odors, household chemicals, dander, fur, and more.Product 2: cleans air fast: cleans 700 sqft every 30 minutes, nurseries, offices, kitchens, living rooms, twice as fast as key competitors on Turbo speed. Sleepscore validated and users feel more rested upon waking.
More information #ad
Used on “auto mode” the sensor will adjust the speed of the fan to clean the air more effectively when a higher number of particles are present. Product 1: air quality light and sensor: the power button changes colors instantly as the sensor detects the particles in the air. Product 1: true hepa: includes a high capacity hepa layer to capture 99. 97% of airborne particles down to 03 microns. True hepa filters last 3-5 months longer than standard filters. Product 2: sleep mode: features a “lights out mode”, press the power button once and the lights turn off. Packed with activated carbon to absorb harmful airborne particles including smoke cooking, wildfire, and more. Product 2: fresh air: recommended for dust, voc’s, allergens, all while preventing the growth of mold and bacteria.
Brand | Alen #ad |
More information #ad
9. Alen
#ad
H13 True HEPA, Removes Allergens, Air Quality Auto Sensor, in White, in White & BreatheSmart 45i Air Purifier for Large Rooms up to 800 Sqft, Alen BreatheSmart 75i Large Room Air Purifier
#adAlen #ad - Product 2: 5 air quality colors: a laser smart sensor detects airborne particles and auto-adjusts with air quality changes. All 75i filters include an antimicrobial compound to help eliminate germs, mold, bacteria, and fungi. All 45i filters include an antimicrobial compound which help eliminate germs, bacteria, mold, and fungi.Product 1: recommended for: dust, allergens, household odors plUS smoke from cigarettes, pet dander, wildfires, fur, pollen, and VOC fumes from chemicals and aerosol sprays. Includes a vacuumable prefilter to help increase filter life.
More information #ad
Sleek design fits in any space from small to large bedrooms, allergens, and basements. Product 1: 5 air quality colors: a laser smart sensor detects airborne particles and auto-adjusts with air quality changes. Product 2: recommended for: dust, dander, living rooms, nurseries, offices, pet fur, kitchens, and odors. Blue = excellent, orange = fair, green = Good, Red = Poor, Purple = Bad air quality high levels of particles. Blue = excellent, red = poor, orange = fair, Green = Good, Purple = Bad air quality high levels of particles. Product 1: true hepa filter: includes a medical grade h13 true hepa layer that removes 99. 99% bacteria, aerosolized viruses, and airborne particles larger than 01 micron.
Brand | Alen #ad |
Weight | 3.6 Pounds |
More information #ad