When replacing this unit, how do you disconnect the 1/4" pipe from both ends of this units quick connect?

I'm sorry I didn't attempt to do it myself as my fridge/freezer was too heavy for me to move it to get behind it where the filter is attached to the fridge. Someone did it for me. Best get an obliging plumber or builder. It seemed very simple and took only about 10-15 mins. You must turn off the tap first that is connected to the fridge. Then at the fridge end, simply cut off the cable with the old filter - don't try to undo the old filter; it is quite impossible. My fridge has come supplied with a very long cable - enough to have it cut off every six months to replace the filter. The new filter is attached to the fridge cable at an upright position. (You know which way is up from the print on the new filter.) You have to remove the blue clip around the new filter, then insert the fridge cable into it and push as far as the cable will go (about an inch) and then put the clip back to secure the cable. Have a large bowl nearby to catch surplus water dripping out of the old cable. There are instructions with the filter. Get a strong person to do it. Keep the new filter in the upright position behind the fridge with the tape advertised as "no more nails". Buy the red coloured one - not the blue which is not as strong. After connecting up the new filter, you must run the water through the fridge until the water is completely clear. May take several pints. The carbon in the filter will blacken the water and needs to be washed away before ready to drink. To move the fridge without damaging the kitchen floor, use a cardboard sheet under the feet of the fridge to push it out if the fridge is against a wall like mine is. Remember to turn the tap back on once the new filter is secured. Good luck!

does this filter come with the adapters needed to install?

It doesn't really need any adaptor. You can cut the existing hose in half, the one from the water source to ice maker. The ends of this filter are made so that you kind of grip and twist to get a nice seal. The directions are good and it is easy. Just make sure you read them....and follow them. :)

how many microns? what nsf/ansi certifications

Hi - Thank you for your interest in a GE Appliances inline water filter. This filter has a Class II rating which means it can reduce or remove particulates from 1 to 5 micron in size and is certified against NSF/ANSI Standard 42. We are glad you checked with us. Kind regards - Vikki@GEA

My water line is copper (not plastic) and ends in a copper thread, while the filter (I bought it) has a plastic inlet. Is there any adapter to buy?

I'm sure there is. As I recall, the fitting on the filter is a 1/4" push-to-connect tube fitting. You would need to identify the thread on the copper end and buy a fitting with a matching female thread on one end and a 1/4" push-to-connect tube on the other end. Then use a short length of 1/4" polyethylene tube between the two push-to-connects. Take the filter to home depot and ask for help in the plumbing department.

Material	Plastic
Product Dimensions	2"D x 2"W x 9.8"H
Item Weight	11.2 ounces
External Testing Certification	WQA -CSA B483.1
Product Benefits	Reduces Chlorine Taste and Odor for Better Water
Brand	GE
UPC	084691179139
Unit Count	1.0 Count
Number of Items	1
Manufacturer	GE
Part Number	GXRTDR
Item model number	GXRTDR
Is Discontinued By Manufacturer	No
Size	1 Count (Pack of 1)
Color	White
Style	GXRTDR
Item Package Quantity	1
Number Of Pieces	1
Certification	NSF Certification
Special Features	Electric
Included Components	Water Filter
Batteries Included?	No
Batteries Required?	No

GE GXRTDR Exterior Refrigerator/Icemaker Filtration System, White

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