

💧 Seal your space like a pro—because leaks are so last season!
Jamsill Guard 4 9/16" Up To 40" Door Window Pan Flashing is a patented, high-impact ABS plastic sill pan designed to prevent water damage at door and window sills. Its telescoping, adjustable design fits rough openings up to 40" wide and installs easily with PVC cement for a seamless, durable waterproof barrier. Trusted by professionals since 1983, this USA-made product combines superior moisture protection with quick installation, making it the go-to choice for energy-efficient, long-lasting weatherproofing.
| ASIN | B00BTJ675S |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #132,781 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,149 in Building Materials |
| Brand | jamsill |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (190) |
| Date First Available | March 13, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1 pounds |
| Item model number | CECOMINOD061393 |
| Manufacturer | JAMSILL GUARD |
| Material | ABS Plastic |
| Maximum Gap Fill | 40 Inches |
| Number of Pieces | 1 |
| Part Number | CECOMINOD061393 |
| Product Dimensions | 5.5 x 2 x 20 inches |
| UPC | 645128005010 |
D**N
Great for energy efficiency and moisture prevention.
This product is something I couldn’t find in a big box store, but it is perfect. Easy to install, and it helps provide a very nice look and will certainly help prevent moisture incursion. This was my second purchase, because I thought the one I used on my front door was so perfect.
G**1
Good fit.
I was nervous about using this, as I have never used a sill pan before. What concerned me was the depth. It was a perfect fit. It laid down with the edge overhanging my 3/8" siding on our shed, and the inside just slightly beyond the edge of the door sill. I think it would have been perfect if the outside siding had been 1/2", but not beyond that. The PVC cement set up quickly. It did however soften the underlying oil based paint I had put on the floor two days earlier, which is something I had done for extra protection, which is not normally done in a door installation. The price was higher than other sources, but instead of waiting a week or more from a Home Depot or Lowes, it was here the next day, so I can't complain.
J**O
Must have
Works very well ordered two more for another job.
P**Y
Good
Good product.
M**E
Shipping is super fast!!!
I am giving the product 5 Star’s because it is well designed and installing is very easy. However the price point is a bit steep. I have used other brands and have achieved like results. But if you need it in a hurry, the big box stores will take a lot longer to come in. Therefore I chose to get the product quickly and purchased it thru Amazon.
L**Y
Works great and was easy to install!
Was having leaking door issues on a newly installed exterior door, which still leaked whenever it rained despite having the installers/contractors come to try and fix it a few times. Ended up buying this product as a last resort, and decided to install it myself. Haven't had any issues since. Not one drop has gotten past this thing, it's fantastic!
D**S
Only works for the most standard new construction openings
Bought this hoping to retrofit my back door, then discovered that this is only for generic, standard new construction applications. My door sill sits on a ledge, so it wouldn't fit. If you are doing a remodel, or have an old house (like mine), this might not work for you. I ended up doing what I should have done from the start and made my own pan from sheet flashing.
J**Y
The perfect fit for your door.
Replaced our entry door in an area of wind an rain. This item made short work of water proofing the threshold. Istallation was super easy, with well done instructions.
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