Description: ELECTROSTATIC WASHABLE PERMANENT LIFETIME FILTER! SAVE A TON OF MONEY OVER REPLACEMENT FILTERS! SIMPLY WASH / DRY AND REUSE! 6 STAGES OF FILTRATION!!!!! (not just 5 like the more expensive BoAir filter!) (8 TOTAL LAYERS IN THIS FILTER WHEN YOU COUNT THE FRONT AND BACK GRIDS TOO!) FIRST, I would like to start off by thanking you for visiting our ebay listing for ELECTROSTATIC WASHABLE RE-USEABLE HIGH QUALITY AIR FILTERS! With our feeback score currently over 17,000+ positives, you can rest assured that we stand behind our products and offer the best in air filtration! Don't be fooled by the "other" guys and all of their "hype" about their washable filters. We have been in the filtration business for over 25 years. We not only sell to hospitals (super clean surgery room filters) and pharmaceutical drug manufacturers (ultra clean room facilities) we also bring our expertise to you, the homeowner! We are not a "supply house" that sells a lot of everything, we are FILTRATION EXPERTS! SECOND, I would like to be up front and honest. Virtually ALL washable type / re-useable type filters are NOT MERV rated! They simply do not perform well under the industry standard MERV test. This is why you don't see MERV ratings on this listing and you DON'T see them on virtually all other washable OR ELECTROSTATIC filters offered on Ebay. They just can't perform well enough to get a good solid beneficial test using the MERV standard. Plain and simple! However, if you're not overly concerned with sub-micron particles and want to save money, these washable permanent ELECTROSTATIC filters are an EXCELLENT alternative! You can save a lot of money in the long run by washing and re-using these filters instead of disposing of costly pleated filters month after month and year after year. THIRD, feel free to review all of the other claims and info on the "other" electrostatic washable filters on Ebay, EVEN THE BoAir BRAND. They brag about their filters having a restriction value of 0.10" w.g. with the new clean filter. (That's a measure of how much restriction the filter places upon your unit's fan/motor to suck the air through it. Our filters have just 0.08" w.g. initial resistance! THAT MEANS OURS IS LESS RESTRICTIVE TO AIRFLOW ALLOWING YOUR UNIT TO RUN EASIER AND SAVE YOU ON ENERGY COSTS! FINALLY, their filter is just a 5 STAGE FILTRATION. OUR FILTER HAS 6 TOTAL LAYERS OF FILTRATION IN IT, PLUS THE OUTER TWO GRIDS! OH, AND DID I MENTION........... OUR PRICE IS LOWER TOO! DUE TO SUPPLY CHAIN ISSUES AND BEING ABLE TO GET RAW MATERIALS / METALS ALONG WITH A VERY TOUGH TIME FINDING LABOR... Please allow up to 30 business days for your order to be manufactured and shipped out. (Excludes weekends and holidays). Sometimes quicker, rarely ever longer! We put your order in the production line the same day you order it here on ebay! CONSTRUCTION: This Low Resistance Electrostatic Filter meets manufacturer specifications for low initial resistance to air flow. A combination of woven polypropylene and unique high loft polypropylene enclosed in a nominal 1" or nominal 2" metal frame. ADVANTAGES: No modifications needed to the furnaceNo electrical connections needed, air flow charges filterHelps remove tobacco smokeImproves the air for allergy sufferersWashable, just rinse in sinkCuts down on dustingEliminates many odorsRemoves microscopic irritantsFilter should outlast your furnace These filters are recommended to be washed out every 4 to 6 weeks. Simply remove your filter and use a vacuum or light air hose to remove dust. Then, use water to rinse the opposite direction of the airflow that you had the filter installed. If necessary, a light cleaner such as mild dish or laundry soap can be used to remove cigarette smoke residue or other things that may adhere to the filter. Rinse the filter out very well, allow it to dry (a hairdryer on low comes in handy!) and put it back in your unit. Do not leave your filter out in direct sunlight or high heat situations for anylong period of time, and never use oil or other chemical sprays on this type of filter. The 1" version has 4 layers of lifetime expanded aluminum and 2 layers of electrostatic filter media for a total 6 STAGE FILTRATION!. The 2" version has 5 layers of lifetime expanded aluminum and 2 layers of electrostatic media for a 7 STAGE FILTRATION! Researchers now agree there may be a greater number of irritating pollutants indoors than outdoors. The result is recirculated stale air contaminated by dust, fibers, fumes, cleaning chemicals and solvents, bacteria and mold. These invisible particles are causing you the discomfort and irritation of itchy, watery eyes, sneezing, wheezing and other adverse reactions. Electrostatic air filters use air and static electricity to capture airborne particles. There are no electrical connections or system modivfications needed. The air flow from your home's ventilation system moves steadily over the filter media, enhancing its charge field. As airborne particles approace the charge field, they are drawn into the media and held until the filter is cleaned. If you desire maximum efficiency, set your unit to run the fan constantly so that the air is continuously recirculating through the filter. MUST READ, NOTE! NOTE! NOTE! Actual size of standard (in drop down menu) filters are 1/2” under in length and width 1/8” under in depth. (Example: 20x20x1 is actually 19 1/2 x 19 1/2 x 7/8). ANY FILTER YOU ORDER (from the drop down menu above) WILL BE 1/2 INCH LESS ON THE FACE SIZE! THE DEPTH WILL ALWAYS BE 7/8 INCHES for the 1" filters and 1-7/8" for the 2" filters. If you're buying from the custom size range above, please send us a message stating the exact size you want the filter to measure. IF YOU NEED A CUSTOM FILTER (LAST 4 OPTIONS ON THE DROP DOWN MENU. Multiply your actual face size dimensions. Example. If you want a custom filter that measures 21.5 x 27.5, doing the math... 21.5 x27.5 591 square inches PICK THAT CATEGORY AT THE BOTTOM OF THE CHOICES ABOVE! CUSTOM FILTER RULES THAT MUST BE FOLLOWED! 1 OF YOUR DIMENSIONS MUST NOT BE LARGER THAN 24-1/2 THE OTHER DIMENSION MUST NOT BE LARGER THAN 29-1/2 SPECIAL SIZES - Custom sizes are made to the customers exact specifications. IF you order from the custom size range, please let us know the exact dimensions you require, do not assume slight under sizing like the standard filters. CLEANABILITY - To gain top efficiency from your heating or air conditioning unit with the ELECTROSTATIC Filter, simply dust off excess dirt, flush out under hot water and replace. A mild detergent can be used if required. There’s no need for oils or adhesives. Because of the Aluminum material in the filter, DO NOT use a strong Alkali Solution. Drain holes are punched in the bottom to allow for proper drainage after cleaning. After cleaning, it’s important the filter is dry before returning it to the unit. Email or message us with any questions, we will be glad to help! BOAIR, AIR-CARE, AAF, our performance and price beats them all! *Trade & Company names are used for identification only; no product endorsement is implied, nor is discrimination intended against similar materials, we are simply giving published comparison information. YOUR ORDER WILL BE SENT TO THE PRODUCTION FACTORY THE VERY SAME DAY YOU ORDER FROM US. HOWEVER, DUE TO IT BEING A LARGE MANUFACTURING FACILITY AND THEM GETTING THOUSANDS OF ORDERS EVERY DAY, THEY OBVIOUSLY CAN'T MAKE / MANUFACTURE / PACKAGE / LABEL AND SHIP OUT EVERY ORDER THAT COMES IN EVERY DAY. THEY SET UP SCHEDULED PRODUCTION TIMES FOR DIFFERENT PRODUCTS THAT THEY MAKE AND YOUR ORDER COULD SHIP ANYWHERE BETWEEN 1 TO 3 WEEKS AFTER PLACING YOUR ORDER. IT WILL SHIP THE VERY SAME DAY THAT THEY MAKE / MANUFACTURE IT, AS THERE IS NO DELAY THERE. IT SIMPLY TAKES THEM TIME TO SCHEDULE THESE INTO THE PRODUCTION OF THE 10'S OF THOUSANDS OF DIFFERENT FILTERS THEY MAKE. HERE'S JUST A SAMPLE OF THE STANDARD OR CUSTOM SIZES WE CAN MAKE FOR YOU! 6.88X15.88X1 (Actual Size) 8X14X1 (Actual Size) 8X16X1 (7.5 x 15.5) 8X20X1 (Actual Size) 8X24X1 (Actual Size) 8X30X1 (7.5 x 29.5) 8X30X1 (Actual Size) 9.75X23.75X1 (Actual Size) 10X10X1 (9.5 x 9.5) 10X10X1 (Actual Size) 10X14X1 (9.5 x 13.5) 10X14X1 (Actual Size) 10X15X1 (9.5 x 14.5) 10X16X1 (9.5 x 15.5) 10X18X1 (Actual Size) 10X20X1 (9.5 x 19.5) 10X24X1 (9.5 x 23.5) 10X24X1 (Actual Size) 10X25X1 (9.5 x 24.5) 10X28X1 (9.5 x 27.5) 10X30X1 (9.75 x 29.75) 11.25X11.25X1 (Actual Size) 11.25X19.25X1 (Actual Size) 11.25X23.25X1 (Actual Size) 11.5X21X1 (Actual Size) 11.88X16.88X1 (Actual Size) 12.5X21X1 (Actual Size) 12.75X21X1 (Actual Size) 12X12X1 (11.5 x 11.5) 12X12X1 (11.75 x 11.75) 12X12X1 (Actual Size) 12X15X1 (11.5 x 14.5) 12X16X1 (11.5 x 15.5) 12X18X1 (11.5 x 17.5) 12X18X1 (Actual Size) 12X20X1 (11.5 x 19.5) 12X20X1 (11.75 x 19.75) 12X22X1 (Actual Size) 12X24X1 (11.5 x 23.5) 12X24X1 (11.75 x 23.75) 12X25X1 (11.5 x 24.5) 12X26.5X1 (Actual Size) 12X26X1 (11.5 x 25.5) 12X27X1 (11.5 x 26.5) 12X27X1 (Actual Size) 12X30.5X1 (Actual Size) 12X30X1 (11.5 x 29.5) 12X30X1 (Actual Size) 12X36X1 (11.5 x 35.5) 12X36X1 (Actual Size) 13.25X13.25X1 (Actual Size) 13X18X1 (Actual Size) 13X20X1 (Actual Size) 13X21.5X1 (Actual Size) 13X21X1 (Actual Size) 13X24X1 (Actual Size) 13X25X1 (12.5 x 24.5) 14.5X19X1 (Actual Size) 14X14X1 (13.5 x 13.5) 14X14X1 (13.75 x 13.75) 14X18X1 (13.5 x 17.5) 14X18X1 (Actual Size) 14X20X1 (13.5 x 19.5) 14X20X1 (13.75 x 19.75) 14X22X1 (Actual Size) 14X24X1 (13.5 x 23.5) 14X24X1 (13.75 x 23.75) 14X25X1 (13.5 x 24.5) 14X27X1 (Actual Size) 14X28X1 (13.5 x 27.5) 14X28X1 (Actual Size) 14X30X1 (13.5 x 29.5) 14X36X1 (13.5 x 35.5) 14X36X1 (Actual Size) 15.25X15.25X1 (Actual Size) 15.5X29X1 (Actual Size) 15X15X1 (Actual Size) 15X20X1 (14.5 x 19.5) 15X20X1 (14.75 x 19.75) 15X25X1 (14.5 x 24.5) 15X25X1 (Actual Size) 15X30.5X1 (Actual Size) 15X30.75X1 (Actual Size) 15X30X1 (14.5 x 29.5) 16.25X21.25X1 (Actual Size) 16.25X21X1 (Actual Size) 16.38X21.38X1 (Actual Size) 16.38X21.5X1 (Actual Size) 16.5X21X1 (Actual Size) 16.5X22X1 (Actual Size) 16X16X1 (15.75 x 15.75) 16X18X1 (Actual Size) 16X19X1 (15.5 x 18.5) 16X20X1 (15.5 x 19.5) 16X20X1 (15.75 x 19.75) 16X21.5X1 (Actual Size) 16X21X1 (15.5 x 20.5) 16X21X1 (Actual Size) 16X22.25X1 (Actual Size) 16X22X1 (Actual Size) 16X24X1 (15.5 x 23.5) 16X24X1 (15.75 x 23.75) 16X25X1 (15.5 x 24.5) 16X25X1 (15.75 x 24.75) 16X27X1 (15.5 x 26.5) 16X30X1 (15.5 x 29.5) 16X32X1 (15.75 x 31.75) 16X36X1 (15.5 x 35.5) 16X36X1 (Actual Size) 17.25X17.25X1 (Actual Size) 17.25X19.25X1 (Actual Size) 17.25X23.25X1 (Actual Size) 17.25X26X1 (Actual Size) 17.25X29.25X1 (Actual Size) 17.25X35.25X1 (Actual Size) 17.5X22X1 (Actual Size) 17.5X23.5X1 (17.1 x 23.1) 17.5X27X1 (Actual Size) 17X17X1 (Actual Size) 17X19X1 (Actual Size) 17X20X1 (16.5 x 19.5) 17X21X1 (Actual Size) 17X22X1 (16.5 x 21.5) 17X25X1 (16.5 x 24.5) 17X25X1 (Actual Size) 18.25X22X1 (Actual Size) 18X18X1 (17.5 x 17.5) 18X18X1 (Actual Size) 18X20X1 (17.5 x 19.5) 18X20X1 (Actual Size) 18X22X1 (17.5 x 21.5) 18X24X1 (17.5 x 23.5) 18X25X1 (17.5 x 24.5) 18X30X1 (17.5 x 29.5) 18X36X1 (17.5 x 35.5) 18X36X1 (Actual Size) 19.25X21.25X1 (Actual Size) 19.25X23.25X1 (Actual Size) 19.5X21X1 (Actual Size) 19.5X22X1 (Actual Size) 19.75X21X1 (Actual Size) 19.75X22X1 (Actual Size) 19.88X21.5X1 (Actual Size) 19X19X1 (Actual Size) 19X21.5X1 (Actual Size) 19X21X1 (18.5 x 20.5) 19X21X1 (Actual Size) 19X22X1 (Actual Size) 19X23X1 (Actual Size) 19X25X1 (18.5 x 24.5) 19X27X1 (Actual Size) 20X20X1 (19.5 x 19.5) 20X20X1 (19.75 x 19.75) 20X21.5X1 (Actual Size) 20X21X1 (Actual Size) 20X22.25X1 (Actual Size) 20X22X1 (19.5 x 21.5) 20X22X1 (Actual Size) 20X23X1 (19.5 x 22.5) 20X23X1 (Actual Size) 20X24X1 (19.5 x 23.5) 20X24X1 (19.75 x 23.75) 20X25X1 (19.5 x 24.5) 20X25X1 (19.75 x 24.75) 20X27X1 (Actual Size) 20X30X1 (19.5 x 29.5) 20X32X1 (Actual Size) 20X34X1 (19.5 x 33.5) 20X36X1 (19.5 x 35.5) 20X36X1 (Actual Size) 20X40X1 (19.5 x 39.5) 21.25X21.25X1 (Actual Size) 21.5X23.25X1 (Actual Size) 21.5X23X1 (Actual Size) 21.5X24X1 (Actual Size) 21.5X26X1 (Actual Size) 21X21X1 (20.5 x 20.5) 21X21X1 (Actual Size) 21X22X1 (20.5 x 21.5) 21X22X1 (Actual Size) 21X23.25X1 (Actual Size) 21X23X1 (Actual Size) 22.25X25X1 (Actual Size) 22X22X1 (21.5 x 21.5) 22X22X1 (Actual Size) 22X23.5X1 (Actual Size) 22X24X1 (21.5 x 23.5) 22X24X1 (Actual Size) 22X26X1 (21.5 x 25.5) 22X26X1 (Actual Size) 22X28X1 (Actual Size) 22X36X1 (21.5 x 35.5) 22X37X1 (21.5 x 36.5) 23.25X29.25X1 (Actual Size) 23.5X23.5X1 (23.1 x 23.1) 23.5X25X1 (Actual Size) 23.5X30.75X1 (Actual Size) 23X25X1 (Actual Size) 24X24X1 (23.38 x 23.38) 24X24X1 (23.75 x 23.75) 24X25X1 (23.5 x 24.5) 24X25X1 (Actual Size) 24X28X1 (23.5 x 27.5) 24X28X1 (Actual Size) 24X30X1 (23.5 x 29.5) 24X36X1 (23.5 x 35.5) 24X36X1 (Actual Size) 25X25X1 (24.5 x 24.5) 25X25X1 (24.75 x 24.75) 25X28X1 (24.5 x 27.5) 25X28X1 (Actual Size) 25X29X1 (24.5 x 28.5) 25X32X1 (24.5 x 31.5) 25X32X1 (Actual Size) 27X27X1 (26.5 x 26.5) 28X29.5X1 (Actual Size) 28X30X1 (27.5 x 29.5) 29.5X32X1 (Actual Size) 29.5X36X1 (Actual Size) 29X29X1 (28.5 x 28.5) 30X30X1 (29.5 x 29.5) 30X30X1 (Actual Size) 30X32X1 (Actual Size) 30X36X1 (29.5 x 35.5) 30X36X1 (Actual Size)
Price: 49.99 USD
Location: Greenwood, Indiana
End Time: 2023-09-18T16:08:14.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Model: ELECTROSTATIC WASHABLE
Country/Region of Manufacture: United States
Filter Media: SYNTHETIC AND ALUMINUM MESH
Type: ELECTROSTATIC
Number in Pack: 1
Color: Silver
MPN: ELECTROSTATIC
Country of Manufacture: United States
Filtration Technology: Electrostatic
Filter Life: LIFETIME
Brand: BFO BUYFILTERSONLINE
Application: Air Conditioner, Air Purifier, Furnace
Available Variations
Color: 10X10X1 EL10101N
Price: 49.99 USD
Available Quantity: 130
Quantity Sold: 130
Color: 10X16X1 EL10161N
Price: 49.99 USD
Available Quantity: 20
Quantity Sold: 18
Color: 10X20X1 EL10201N
Price: 49.99 USD
Available Quantity: 61
Quantity Sold: 61
Color: 10X24X1 EL10241N
Price: 49.99 USD
Available Quantity: 33
Quantity Sold: 33
Color: 10X25X1 EL10251N
Price: 49.99 USD
Available Quantity: 10
Quantity Sold: 10
Color: 10X30X1 EL10301N
Price: 49.99 USD
Available Quantity: 20
Quantity Sold: 20
Color: 12X12X1 EL12121N
Price: 49.99 USD
Available Quantity: 265
Quantity Sold: 265
Color: 12X15X1 EL12151N
Price: 49.99 USD
Available Quantity: 3
Quantity Sold: 3
Color: 12X16X1 EL12161N
Price: 49.99 USD
Available Quantity: 12
Quantity Sold: 12
Color: 12X18X1 EL12181N
Price: 49.99 USD
Available Quantity: 7
Quantity Sold: 7
Color: 12X20X1 EL12201N
Price: 49.99 USD
Available Quantity: 32
Quantity Sold: 32
Color: 12X22X1 EL12221N
Price: 49.99 USD
Available Quantity: 7
Quantity Sold: 7
Color: 12X24X1 EL12241N
Price: 49.99 USD
Available Quantity: 88
Quantity Sold: 79
Color: 12X25X1 EL12251N
Price: 49.99 USD
Available Quantity: 4
Quantity Sold: 4
Color: 12X30X1 EL12301N
Price: 49.99 USD
Available Quantity: 25
Quantity Sold: 25
Color: 12X36X1 EL12361N
Price: 49.99 USD
Available Quantity: 11
Quantity Sold: 11
Color: 14X14X1 EL14141N
Price: 49.99 USD
Available Quantity: 83
Quantity Sold: 83
Color: 14X18X1 EL14181N
Price: 49.99 USD
Available Quantity: 27
Quantity Sold: 27
Color: 14X20X1 EL14201N
Price: 49.99 USD
Available Quantity: 178
Quantity Sold: 178
Color: 14X24X1 EL14241N
Price: 49.99 USD
Available Quantity: 70
Quantity Sold: 70
Color: 14X25X1 EL14251N
Price: 49.99 USD
Available Quantity: 137
Quantity Sold: 137
Color: 14X30X1 EL14301N
Price: 49.99 USD
Available Quantity: 63
Quantity Sold: 63
Color: 15X20X1 EL15201N
Price: 49.99 USD
Available Quantity: 19
Quantity Sold: 19
Color: 15X25X1 EL15251N
Price: 49.99 USD
Available Quantity: 15
Quantity Sold: 15
Color: 15X30X1 EL15301N
Price: 49.99 USD
Available Quantity: 12
Quantity Sold: 12
Color: 16X16X1 EL16161N
Price: 49.99 USD
Available Quantity: 29
Quantity Sold: 29
Color: 16X18X1 EL16181N
Price: 49.99 USD
Available Quantity: 20
Quantity Sold: 20
Color: 16X20X1 EL16201N
Price: 49.99 USD
Available Quantity: 999
Quantity Sold: 469
Color: 16X24X1 EL16241N
Price: 49.99 USD
Available Quantity: 45
Quantity Sold: 45
Color: 16X25X1 EL16251N
Price: 49.99 USD
Available Quantity: 437
Quantity Sold: 437
Color: 16X30X1 EL16301N
Price: 49.99 USD
Available Quantity: 51
Quantity Sold: 51
Color: 16X32X1 EL16321N
Price: 49.99 USD
Available Quantity: 9
Quantity Sold: 9
Color: 18X18X1 EL18181N
Price: 49.99 USD
Available Quantity: 141
Quantity Sold: 141
Color: 18X20X1 EL18201N
Price: 49.99 USD
Available Quantity: 51
Quantity Sold: 51
Color: 18X22X1 EL18221N
Price: 49.99 USD
Available Quantity: 27
Quantity Sold: 27
Color: 18X24X1 EL18241N
Price: 49.99 USD
Available Quantity: 74
Quantity Sold: 74
Color: 18X25X1 EL18251N
Price: 49.99 USD
Available Quantity: 19
Quantity Sold: 19
Color: 18X30X1 EL18301N
Price: 49.99 USD
Available Quantity: 85
Quantity Sold: 85
Color: 20X20X1 EL20201N
Price: 49.99 USD
Available Quantity: 999
Quantity Sold: 835
Color: 20X22X1 EL20221N
Price: 49.99 USD
Available Quantity: 59
Quantity Sold: 59
Color: 20X24X1 EL20241N
Price: 49.99 USD
Available Quantity: 999
Quantity Sold: 94
Color: 20X25X1 EL20251N
Price: 49.99 USD
Available Quantity: 999
Quantity Sold: 558
Color: 20X30X1 EL20301N
Price: 49.99 USD
Available Quantity: 154
Quantity Sold: 154
Color: 24X24X1 EL24241N
Price: 59.99 USD
Available Quantity: 999
Quantity Sold: 195
Color: 24X30X1 EL24301N
Price: 49.99 USD
Available Quantity: 104
Quantity Sold: 104
Color: 25X25X1 EL25251N
Price: 49.99 USD
Available Quantity: 105
Quantity Sold: 105
Color: 12X24X2 EL12242N
Price: 49.99 USD
Available Quantity: 999
Quantity Sold: 25
Color: 16X20X2 EL16202N
Price: 49.99 USD
Available Quantity: 83
Quantity Sold: 83
Color: 16X25X2 EL16252N
Price: 49.99 USD
Available Quantity: 113
Quantity Sold: 113
Color: 20X20X2 EL20202N
Price: 49.99 USD
Available Quantity: 179
Quantity Sold: 179
Color: 20X24X2 EL20242N
Price: 49.99 USD
Available Quantity: 68
Quantity Sold: 68
Color: 20X25X2 EL20252N
Price: 49.99 USD
Available Quantity: 188
Quantity Sold: 188
Color: 20X30X2 EL20302N
Price: 59.99 USD
Available Quantity: 36
Quantity Sold: 36
Color: 24X24X2 EL24242N
Price: 59.99 USD
Available Quantity: 117
Quantity Sold: 117
Color: 24X30X2 EL24302N
Price: 59.99 USD
Available Quantity: 22
Quantity Sold: 22
Color: 1" CUSTOM 0-299 SQ INCHES
Price: 49.99 USD
Available Quantity: 48
Quantity Sold: 48
Color: 1" CUSTOM 300-700 SQ INCHES
Price: 59.99 USD
Available Quantity: 149
Quantity Sold: 149
Color: 2" CUSTOM 0-299 SQ INCHES
Price: 54.99 USD
Available Quantity: 22
Quantity Sold: 22
Color: 2" CUSTOM 300-700 SQ INCHES
Price: 59.99 USD
Available Quantity: 50
Quantity Sold: 50