Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: does it have gaskets
Document: installed in the side of a full size van. Cut a hole with a rotozip and circle tool. Added some silicon and screwed it in. Installed in less than an hour. The aluminum split ring for the inside is larger than the window, i have mine overlapping about a half inch and it works well. You can cut about a half inch off if you want it to sit flush. 6 months, been through a hurricane (sandy) and blizzard (nemo) and it hasn't leaked a bit.
good parkway window for cargo vans
Well made, easy installation. I used it for a porthole in a 1 1/2 inch thick fiberglass/foam front door in a beach house in Galveston.I had to buy longer stainless steel screws, and drill holes in the inner ridge of the outer aluminum frame to make it work with this type of door.I cut two 12&#34; diameter round Lexan polycarbonate windows and added these inside the tinted glass that comes with the porthole. These make the window glass unbreakable.
We bought two porthole windows after seaching the internet for weeks. Most of the windows were either a nautical theme or priced high. We ordered these for a "teardrop" RV and they were perfect... the right price and appearance. The windows were well packaged and delivered quickly. Good buy!
Took a little longer to get here than I thought but was still in the time frame that was promised. Be sure to use the outside ring to mark your hole. The inside ring is a little smaller and the outside won't fit unless you trim the hole. Good product, looks nice. Would recommend.TS
Ordered this item for the door of my RPOD 172 travel travel. The door of our travel trailer does not have a window or a peep-hole, so we can't tell who is knocking on our door. This item solves that problem. The item arrived quickly and in perfect condition.The window appears to be well constructed and came with the necessary mount hardware. Overall, I am very happy with this product and the company and I would order from both again.
Nice item, reasonable install if you add a spacer so the rim will fit tight in between the outside surface & the inside wall.Communication was lacking greatly!
It was very easy to install, I would recomend it anyone who is looking for this item. Thanks Craig Phillips
I was searching for ways to make my van parkway legal and this was the best and most economical solution, when I opened the box (Which was delivered early, nice surprise ) I was very pleased with the overall quality of the product and impressed with the ease in which they where installed  *** Hint you will need two people for the install, one inside the van and one outside pushing real hard to seat the trim ring total install time around 35 minutes for two
I love these little babies on my custom van! They are great quality, and they gave my truck the custom retro look I was looking for.
Answer: no