I put a pair of Bosch (forget the exact model, but very similar to the rain x latitudes) very pleased with them and they look a lot better than the stocks. like flamehead said, 20in for both sides, should have no problem getting a pair at any auto part store.

 

I have been running 22" on each side.

???

 

+1 on the Bosch. I just replaced my 2 yr old ones but they still work great. I put the rainx ones on my mothers cobalt and they suck ***** compared to the Bosch.

 

They should be 22". I put on the Bosch Icons about a month ago and not super happy with them. They leave smears at the bottom and top edges, the middle clears fine. Maybe the 20's would clear better. But, honestly, the Ford versions are probably the best. Remember, some of these trucks sat outside in the UV light awhile before they were sold to you, then used for about a year and still doing fine. Replace with original OEM's like I'm going to do next time.

It is just like brakes, comparing brand new aftermarket with worn out OEM's. Try the opposite next time and you'll be surprised (brakes may not be the best analogy because they dust like MAD).

 

looks like 99-08 used 20 but the new body style f150 use 22. good to know when i buy mine later in the year. i know 04-08 is 20. i had 21 on it when i bought it and the passenger one would hand off and would clean for about 5in up the window.

 

i stand corrected on the size. still, the bosch icons have worked great for me

 

wipers... hah

78 degrees here in AZ.

 

Depending on your weather... if you need heavy duty wipers, go to Napa. Ask for their heavy duty wipers... can't remember brand. I had put a set on my Toyota FJ Cruiser. They were the best! Got me through all kinds of weather and mud.
We travel a lot and not always to the nicest weather places. My husband is currently in Wyoming...

 

Good blades X2

 

the rain-X blades need to be a tad shorter than stock. use the 20's like the rain-x book tells you to.