|Item Weight||5.45 pounds|
|Product Dimensions||10 x 10 x 25 inches|
|Item model number||SP57/11C|
|Size||3" T x 48" x 75" R10|
|Item Package Quantity||1|
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Frost King SP57/11C Water Heater Blanket, 3in Thick x 48in Tall x 75in Long, R10
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|Item Dimensions||10 x 10 x 25 in||10 x 26 x 10 in||10 x 24.12 x 10 in||2 x 75 x 48 in||8.5 x 25 x 8.5 in||10 x 10 x 24.13 in|
Thermwell SP57/11C Water Heater Blanket. Fits up to 60-gallon water heater. 3-Inch tall by 48-inch wide by 75-inch tall
From the Manufacturer
The Frost King SP57/11C Water heater Insultion Blanket is fibergalss and foil on both sides for supreme insulation and fits most gas, oil or electric water heaters. Includes foiltape for easy installation. The reflective value is rated at 10.
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1) It does fit just fine. I have a 40 gallon gas hot water heater. Gas hot water heaters have no water in the bottom foot or so of the tank. That's where the burner is. Not only should you not insulate that portion because it won't gain you anything (only insulate where the water is) but you also risk blocking the air intake (very bad idea). A good rule of thumb to find where the bottom of the water is, look for the drain valve. It's installed at the bottom of the water tank. So I installed it with the 48" as the height and the 75" to wrap around. I was left with a good 5-6 inches overlap, so clearly room for a larger tank. Also, you don't want to insulate the top of a gas tank as you risk obstructing air flow into the flue.
2) There is almost enough tape (-half star). I used one long piece to secure the vertical seam (48") and small pieces to secure it at the top. This used all the tape. I'd prefer a few more feet so I could secure it at the bottom (simply to seal in the fiber glass).
3) It's fiberglass, so long pants, long sleeves, gloves, and respirator are a must. When you finish, make sure to shake out your hair, throw clothes in laundry, and take a shower. Don't go walking around your house. I didn't notice a strong smell from it like other fiberglass products.
4) It would be improved by flaps (-half star). Besides one edge, the plastic facing is exactly the same size as the underlying insulation. It would be a lot easier to install, tape, and secure if the plastic was maybe 2 inches larger all around.
5) This is exactly the same price as Thermwell's other insulation blanket which is only 2" thick and R6.7. No clue why anyone would buy that one if they're the same price.
6) This is for indoor use only. Fiberglass looses all insulating value if it gets wet.