Aviation Tin Snips are also an option, however being manually powered they're a lot of effort.
If you're right-handed then you probably want the red-coloured ones, because they turn to the left as you cut. Left-handed users would want the green-handled ones in this instance.
Downsides are that you need a fairly large entrance hole, and like in @harper's ...
If the only tool you have is a jigsaw, then make a radius guide. You'll need a fine-tooth metal cutting blade, and maybe several. A sabre-saw is not suitable for this approach.
Start by drilling a center hole in the van, and carefully measure inside and out to make sure you're clearing any framing members or reinforcements. Presumably you've removed any ...
The van metal is VERY thin - its strength comes from being stamped in a curve, not thickness. The #1 problem will be distorting the outside of the circle and creating yourself either ugliness or a need to do body work and paint. Almost any power tool will tend to do that, as will many hand tools.
With that in mind, I would tend to go old-school. First, as ...
Cutting curves in sheetmetal is a good job for a pneumatic nibbler. They can cut strait lines or curves with any radius and can be a little cleaner than a jigsaw because they support both sides of the material while punching out little bites.
If you don't have a decent air compressor, then they also have electric versions and even drill attachments that do ...
Yes, that should have been flashed first. Definitely call him back. Hope you didn't pay him the final.
EDIT: flashing is usually thin formed aluminum sheet metal used to divert water flow. One would want to divert water away from the framing and over the siding.
The codes can be checked against NAMI's insulated window manufacturer directory, which is searchable on the organization's website.
National Accreditation and Management Institute (NAMI)
On their webpage under Q&A tab:
Looking for a Code
The certification label or mark bears a code that allows traceability of the product. If you cannot find the code on ...
I would wonder why the original builder built it that way. Perhaps there is something under the platform that could not be moved: foundation, load-bearing element, etc.
If there is nothing there and an engineer says the stairs can be moved, that might be a good solution.
However, if moving the stairs becomes not an option due to what is under the platform, I ...
Is this level of quality control typical from Pella?
I've installed 5 Pella 250 windows in my home between 2018 and 2021.
Your experience seems consistent with mine. I never read the sales brochure so I guess my expectation wasn't inflated and the seam is just like countless other vinyl windows I've seen.
SmoothSeam corner available on Pella 350 Series products only.
Page 5 of the Pella Window & Door Guide (PDF)
There you have it. You didn't buy what you thought you bought. Bummer.
Regarding the photo of the brochure that was added later, it may be a faulty early version of this one, which lacks the reference to the 250 series window shown in the image ...
It's called a window sash and it is the part of the window that holds the glass and the framework around the glass in place.
You can replace it with a piece of durable wood of the same shape (rectangle) or a quarter round.
Remove it very carefully, as you risk cracking the glass.
Alternatively, to avoid removing the existing sash and risk cracking the pane, ...
Frost-King and other brands sell kits for covering your windows in plastic. Basically they consist of a roll of double-sided tape, and some plastic sheeting that has some slight heat-shrink properties. You install them by finding a perimeter beyond the window proper, applying tape to the perimeter, then sticking the plastic to the tape.
Once installed, you ...