
- SKU: MA-50UR-1-A
- Availability: in stock Many in stock Out of stock You can purchase this product but it's out of stock
Grainger - MA-50 Replacement Filter
I NEED HELP CHOOSING MY FILTER
High-grade HEPA filtration (H13) that removes 99.9% of airborne particles down to 0.1 microns.
True HEPA H14 with Antibacterial MaterialA higher grade of HEPA (H14) made with special antibacterial material. Removes 99.99% of airborne particles down to 0.1 microns
- Vendor: Medify Air
- Product Type: Air Purifier Filter
- Barcode:

1. Pre-Filter
Pre-filter removes hair, fibers, and large particles like dander.
2. True HEPA Filter
The high-efficiency True HEPA filter is tested to remove up to 99.9% of particles down to 0.1 microns. This higher-grade HEPA filter easily catches pollen, dust mites, mold spores, and other tiny airborne particles you can't even see.
3. Substantial Carbon Filter
Substantial carbon filter with carbon pellets remove toxic odors, smoke, and formaldehyde.

What is an air purifier?
What is indoor air quality?
What is a HEPA filter?
HEPA is a type of pleated mechanical air filter. It is an acronym for "high-efficiency particulate air [filter]" (as officially defined by the U.S. Dept. of Energy). This type of air filter can theoretically remove at least 99.97% of dust, pollen, mold, bacteria, and any airborne particles with a size of 0.3 microns (µm). *Source: epa.gov, What is a HEPA filter?
How does it work?
Why are Medify Air filters special?


Bundle & Save
We work better together. Pick the right products for the entire house and get exciting discounts up to 15%
CREATE YOUR BUNDLECompare Our Units
All units are equipped with pre-active carbon and HEPA H13 or H14 filters.
![]() MA-CAR |
![]() MA-14 |
![]() MA-15 |
![]() MA-18 |
![]() MA-22 |
![]() MA-25 |
![]() MA-35 |
![]() MA-40 |
![]() MA-45 |
![]() MA-50 |
![]() MA-112 |
![]() MA-125 |
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Max CADR††Average CADR for pollen, smoke, and dust |
20m3/h (12 CFM) |
120m3/h (71 CFM) |
150m3/h (88 CFM) |
150m3/h (88 CFM) |
150m3/h (88 CFM) |
250m3/h (147 CFM) |
290m3/h (171 CFM) |
380m3/h (224 CFM) |
350m3/h (206 CFM) |
500m3/h (294 CFM) |
950m3/h (559 CFM) |
950m3/h (559 CFM) |
Coverage | 80 sq. ft. every 30 min. | 200 sq. ft. every 30 min. | 330 sq. ft. every 30 min. | 330 sq. ft. every 30 min. | 330 sq. ft. every 30 min. | 500 sq. ft. every 30 min. | 640 sq. ft. every 30 min. | 840 sq. ft. every 30 min. | 772 sq. ft. every 30 min. | 1,100 sq. ft. every 30 min. | 2,500 sq. ft. every 30 min. | 2,051 sq. ft. every 30 min. |
Colors | Black | White, Black | White, Silver | White, Black | White, Black | White, Silver, Black | White, Silver, Black | White, Black | White, Black | White, Silver, Black | White, Black | White, Black |
Option with UV Light |
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Option with Ionizer |
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Fan Speeds | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 9 | 4 | 4 | 9 |
Customer Rating | ||||||||||||
Price | $99 | $89 | $119 | $95 | $119 | $160 | $275 | $270 | $400 | $325 | $595 | $695 |
SIZE GUIDE
This is an approximate conversion table to help you find your size.Italian | Spanish | German | UK | US | Japanese | Chinese | Russian | Korean |
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34 | 30 | 28 | 4 | 00 | 3 | 155/75A | 36 | 44 |
36 | 32 | 30 | 6 | 0 | 5 | 155/80A | 38 | 44 |
38 | 34 | 32 | 8 | 2 | 7 | 160/84A | 40 | 55 |
40 | 36 | 34 | 10 | 4 | 9 | 165/88A | 42 | 55 |
42 | 38 | 36 | 12 | 6 | 11 | 170/92A | 44 | 66 |
44 | 40 | 38 | 14 | 8 | 13 | 175/96A | 46 | 66 |
46 | 42 | 40 | 16 | 10 | 15 | 170/98A | 48 | 77 |
48 | 44 | 42 | 18 | 12 | 17 | 170/100B | 50 | 77 |
50 | 46 | 44 | 20 | 14 | 19 | 175/100B | 52 | 88 |
52 | 48 | 46 | 22 | 16 | 21 | 180/104B | 54 | 88 |
SHIPPING
- Complimentary ground shipping within 1 to 7 business days
- In-store collection available within 1 to 7 business days
- Next-day and Express delivery options also available
- Purchases are delivered in an orange box tied with a Bolduc ribbon, with the exception of certain items
- See the delivery FAQs for details on shipping methods, costs and delivery times
RETURNS AND EXCHANGES
- Easy and complimentary, within 14 days
- See conditions and procedure in our return FAQs