Depending on your SUV, you may only need 2 window washers. However, there are some SUV's that require two on the front, and two on the back, so really the amount of window washers you require for your specific SUV depends on the make, and model of your specific vehicle.
The washers aren't required for iron heads.
Most don't..
Definitely! All you need are a couple pieces of wood, some string and a few washers.
Start with your needs. You need a certain amount of privacy so there needs to be a window treatment. I would do some research on blinds or shutter blinds. There are a lot of different kinds available at different price points and for different purposes.
There are many second hand stores that sell washers and dryers for great prices. If you don't have near you, you can look on sites like kijiji where people sell items they don't need such as washers and dryers.
Any industrial custodial supply house has all the tools window washers use. You can purchase the larger squeegies and toolbelts. Otherwise, most of the equipment is pretty standard, except for the scaffolding, which you probably won't need. There are a number of internet retailers who specialize in the trade. You can start by looking at cwcsupplyusa.com/ and ungersupply.com. Much of the trade actually centers on treating water so that you remove the causes of streaking on the windows.
Please specify the size and material of the washers. Washers as in pipe fittings or wash macines, and why you feel the need to ask something so odd. There are also packing issues, but I'm assuming that they're irrelevant and that anything within 10% or so is reasonable, since the answer would have no conceivable practical use.
A home appliance store or a department store such as Sears or Lowes sells stackable washers. They can also be ordered on-line from Amazon. Garage sales are a good source of used stackable washers as people move from apartments to houses and no longer need their stackable washers.
Based on my searches, you can find to buy window envelopes online from windowenvelopes.com. Here you can find many types of window envelope that you need.
how many small eggs do I need to make a large egg in a reciepe
Is your window leaking and in need of fixing?
he is in a light house looking out a large window you need to find a solar bridge to reach him