Question 1

does anyone have the exact measurements for the X large + Medium filters?  Thanks

Accepted Answer

Must be a secret - I sure don't understand why the seller doesn't clearly list the size.Whisper Bio-Bag Filters are slightly tapered in the drawing. Width dimensions are at the top.Large: 4.6 wide x 6.4 tallMedium/"Junior":  3.0 wide x 5.2 tallSmall: 2.1 wide x 3.8 tallFound dimensions on the Tetra website but not sure the link address will work here. Here is the PDF file link:http://cdn.spectrumbrands.com/~/media/UPG/Tetra/Aquarium/Equipment/Replacement%20Filter%20Cartridges/WhisperCartridges.ashxIf this doesn't work go to their website at: www.tetra-fish.com and search for "Tetra Whisper Unassembled Bio-Bag Filter Cartridges"

Question 2

Does it fit topfin power filter 10?

Accepted Answer

I bought these about a month ago for my top fin 10 filter.  The cartridge in my top fin 10 is angled inward at the bottom whereas this filter cartridge is more of a rectangular shape.  Due to the shape it does not fit the top fin 10 slot.  However I kept my old cartridge frame and I'm using this product, everything works great.

Question 3

What is the difference between the 26164 and  ATS26164? Both seem to be 12 large Whisper filter cartridges.

Accepted Answer

Hi, I use the Medium size whisper filter cartridges...the difference between the 26164 & ATS26164 could be the fact that one is a pre-assembled cartridge and the other is not.  I buy the 12 pack of unassembled filters which are quite a bit cheaper and are the identical product.  It comes with the white filters, one plastic insert, and small charcoal bags that take a few minutes to assemble.  Hope this helps.

Question 4

medium size it's for 10 galons?

Accepted Answer

Hi Oscar, the medium size fits the Whisper PF10 and the Whisper 20 Power Filters.

ASIN	B072J8XJDP
ASIN	B072J8XJDP
Allergen Information	Dairy Free
Best Sellers Rank	#1,222 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Filter Accessories
Brand Name	Tetra
Customer Reviews	4.7 4.7 out of 5 stars (28,235)
Date First Available	May 23, 2017
Department	Unisex-Adult
Included Components	See Label
Item Form	Filter Part
Item Type Name	Pet Supplies
Item Weight	0.13 kg
Item model number	AQ-26350
Liquid Volume	1 fluid ounces
Manufacturer	Tetra
Manufacturer	Tetra
Manufacturer Part Number	AQ-26350
Model Number	AQ-26350
Number of Items	1
Pet Type	Fish
Product Dimensions	4.5 x 3.5 x 5.75 inches; 4.66 ounces
Target Species	Fish
UPC	046798263500
Unit Count	6 Count
Warranty Description	See Label.

Tetra Whisper Bio-Bag Medium Filter Cartridges for Aquariums, 6 Count

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