what are the dimensions? are they the red sea 4.5 inch diameter ones that fit their reefer sumps?

Yes, they are designed for the Reefer. I will say that I no longer use them. For some reason, mine would get a slick film on the outside of the sock, so when you would lift it out to change it, all this slime-like stuff would come off in the sump. I bought a plastic filter media cup that was designed to replace the socks altogether. It is on Amazon also....

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Red Sea 15840 Thin Mesh 225 Micron Filter Bag, White, 4 Inch

Product ID: 27742420

Details

Brand
Red Sea
Outer Material
Felt
Product Grade
Like New
Style
Modern
Vehicle Service Type
vehicle

🕒Extended cleaning intervals

🧵225 micron ultra-fine mesh

🇺🇸Proudly made in USA

€ 29.65

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧼 Keep it crystal clear — filter smarter, not harder!

COMPACT LIGHTWEIGHT - Sleek 5.4 x 3.7 x 1.8 inch design fits seamlessly into your setup
UNIVERSAL COMPATIBILITY - Perfectly tailored for a wide range of aquarium filter systems
DURABLE FELT CONSTRUCTION - Thick, resilient felt traps debris longer, reducing maintenance frequency
ULTRA FINE 225 MICRON MESH - Captures even the tiniest particulates for crystal-clear filtration
TRUSTED AMERICAN CRAFTSMANSHIP - Manufactured in the USA for premium quality and reliability

The Red Sea 15840 Thin Mesh 225 Micron Filter Bag is a premium felt filter designed for efficient particulate capture with a fine 225 micron mesh. Made in the USA, its durable construction extends cleaning intervals, ensuring hassle-free maintenance. Compact and compatible with various aquarium filters, it’s the go-to choice for professionals seeking reliable, high-performance filtration.

Specifications

ASIN	B01E0M72O0
ASIN	B01E0M72O0
Best Sellers Rank	#172,954 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,934 in Aquarium Filter Accessories
Brand Name	Red Sea
Compatible with Vehicle Type	vehicle specific
Customer Reviews	4.6 4.6 out of 5 stars (66)
Date First Available	April 8, 2016
Global Trade Identification Number	00730773421978
Included Components	all
Item Type Name	Red Sea Thin Mesh 225 Micron Filter Bag
Item model number	15840
Manufacturer	Red Sea
Manufacturer	Red Sea
Manufacturer Part Number	15840
Manufacturer Warranty Description	Manufacturer
Model Number	15840
OEM Equivalent Part Number	15840
Outer Material	Felt
Product Dimensions	5.4 x 3.7 x 1.8 inches; 1.76 ounces
Product Grade	Like New
Style Name	Modern
UPC	730773421978
Unit Count	1 count

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