Key takeaways
- The INTEX Dura-Beam 18" King Size Air Mattress with Built-In Pump, model 64409ST, is a tall inflatable bed sized for two adults.
What's inside
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The INTEX Dura-Beam 18″ King Size Air Mattress with Built-In Pump, model 64409ST, is a tall inflatable bed sized for two adults. The listing describes elevated premium comfort and a portable design for camping and travel, with a pump built into the mattress.
The details visible in the title are few but clear: king size, an 18-inch height, a Dura-Beam construction and a built-in pump. Capacity, inflation time and surface material are not listed. This page looks at what the listing supports in 2026 and what you should confirm on the product page before choosing it for guests or a trip.
Key Specs at a Glance
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| Spec | What the listing says |
|---|---|
| Model | 64409ST |
| Size | King |
| Height | 18 inches |
| Pump | Built-in |
| Construction | Dura-Beam |
| Intended use | Camping and travel, with elevated comfort |
| Weight capacity and inflation time | Confirm on the product page |
Who It Suits
A king-size air bed suits hosts who need to sleep a couple or want extra room for a person who moves around at night. The 18-inch height is lower than the tallest raised beds, but it still lifts the sleeping surface off the floor, which can help with getting up and down.
Because the pump is built in, there is no separate inflator to carry. That is convenient for a guest room, a rented cabin or a large family tent, though a king-size footprint needs real floor space, and buyers should measure the room or tent before ordering.
- Hosts with a spare room who occasionally need a full-size guest bed.
- Couples who camp in a large tent and want a bigger sleeping surface.
- Travelers who need a temporary bed in a rental or relative’s home.
Intex builds the Dura-Beam line around internal beams that give the mattress its shape, and the title pairs that with the phrase “elevated premium comfort.” Those are marketing words, not measurements, so treat them as the maker’s intent. The listing does not say how firm the surface is, what the top is made from, or whether it is flocked.
It is also worth thinking about sheets and storage. A king-size air bed needs king-size bedding to stay covered, and it packs down into a bulky bundle even when deflated. Shoppers short on closet space should look at the packed dimensions before deciding that a king is the right size.
Strengths and Trade-Offs
Strengths
- King size gives more width than a queen for two adults.
- The built-in pump removes the need for a separate inflator.
- An 18-inch height raises the surface above the floor.
- The model number makes it simple to match the exact listing and compare sellers.
Trade-Offs
- The title does not list a weight capacity, so two heavier adults should look for it.
- A built-in electric pump generally needs a power source, which limits remote use.
- A king-size bed is bulky when packed, so storage space matters.
- Air beds can soften overnight in general, and the title makes no air-retention claim.
How It Compares With Similar Options
King Koil Raised Airbed
The King Koil listing is a queen with a built-in pump, standing 20 inches tall, and it lists a 650 lb capacity and two-minute inflation. Notably, it is a queen, not a king, so it is smaller in footprint than the Intex. It markets a luxury feel for guests and home. Buyers who want a taller profile and a stated capacity at a slightly smaller size might consider it, while those who need king width should look elsewhere.
Naturehike California King
The Naturehike is a California king with a built-in rechargeable pump, a 992 lb maximum and a thinner 9.84-inch thickness. The rechargeable pump suggests it can run without a wall outlet, which is useful for camping. California king is longer and narrower than a standard king. It is a camping-leaning, lower-profile option, and buyers who need a battery-powered pump and a high listed capacity may prefer it.
Sekey King
The Sekey is a king with a built-in pump and a 20-inch raised design, listing three-minute inflation, adjustable air support, a waterproof surface and a 990 lb capacity. It matches the Intex on size and pump type but offers a higher profile and more listed features. It sits in a similar or slightly higher tier. Shoppers who want the extra height and the adjustable support wording may lean toward it.
Which to pick: Choose the Intex 64409ST for a king-size, 18-inch bed with a built-in pump from a familiar inflatable brand. Look at Sekey for more height and listed features, Naturehike for a rechargeable pump, and King Koil only if queen size is enough.
Before You Buy
- Measure your room or tent, since king size takes up considerable floor space.
- Confirm the weight capacity and the pump’s power source on the product page.
- Check the packed size and weight so it fits your car or closet.
- Buy bedding sized for a king air mattress, because standard mattress sheets may fit differently.
- Look at the warranty and return terms, since the title does not state them.
Keep in mind that size names vary by seller. A king, a California king and a queen are all in this comparison, and their footprints differ, so measure the space and compare the exact dimensions rather than the size label. The Intex listing gives a model number, which helps you confirm that the product page you are reading is the one you intend to buy.
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Frequently Asked Questions
Does the Intex king air mattress have a built-in pump?
Yes, the title says it has a built-in pump. Check the product page for the power source and the approximate inflation time.
How tall is the Intex Dura-Beam king mattress?
The listing gives an 18-inch height. That raises the surface above the floor, though some competitors list 20 inches.
Will a king air mattress fit in a tent?
Only in a large tent, because king size is wide and long. Compare the mattress dimensions with your tent’s floor measurements before buying.
Is this air mattress suitable for everyday use?
The listing points to camping, travel and guest use. For nightly sleeping, consider whether a regular bed or a different product with a longer support claim would be a better fit.
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