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Old 12-15-2018, 10:34 AM   #1
timsea
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New mattress

Any one put a new mattress in a 3720 or 3721 mine is a strange size 74 wide buy 78 long with the radius edge what size did you put in.Thanks. Tim
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Old 12-15-2018, 05:10 PM   #2
GAinaMontana
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74 by 78 is considered a "rv king" size. I replaced my original mattress with a r5 Sleep Number bed. DW and I like the mattress as I like a very firm mattress and she likes it soft.
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Old 12-15-2018, 05:23 PM   #3
Last2Die
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I did something similar. I took out the rv king and replaced it with a eastern king. Fit perfect and more space. We did lose some space walking around it but we don’t really walk around as much as we climb on it.
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Old 12-15-2018, 06:41 PM   #4
awheeler
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We changed out our king for a queen. Sooo much more room. We purchased the Saatva Adjustable bed. They delivered, setup it up, demonstrated the functions, and hauled away the old mattress - all for free. https://www.saatvamattress.com/


We love it!
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Old 12-15-2018, 09:39 PM   #5
DQDick
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We also cut down the plywood and replaced the king with a standard queen. Really like the bigger room.
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Old 12-15-2018, 11:04 PM   #6
BuilderBob
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We cut the deck and a queen also like having the room. Don't need a king anyways.
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Old 12-16-2018, 06:09 AM   #7
jeffba
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We also cut ours down to Queen size. Easier to make the bed. We put our S&B matterss in it
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Old 12-16-2018, 06:44 AM   #8
WeBeFulltime
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We also cut our platform down to queen size and installed a normal house size and shape memory foam and has plenty of room for it.
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Old 12-23-2018, 02:45 PM   #9
Wayner197
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Pad Added

We added a 2” foam egg crate type mattress pad to our 3721 and it made all the difference in the world. It was about $75 at Walmart
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Old 12-23-2018, 03:19 PM   #10
MidMOTraveler
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Wife ordered 3” memory foam topper and I rounded the corners. Using 12” pocket king fitted sheets with no issues. 100% better than just the factory mattress.
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Old 12-23-2018, 03:24 PM   #11
richfaa
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We have the sleep number queen had it in both our Montana's and have one in the S&B. We are long timers and stay in the RV most of the year. They are very comfortable but not in expensive.
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Old 12-23-2018, 04:03 PM   #12
TK1
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Quote:
Originally Posted by timsea View Post
Any one put a new mattress in a 3720 or 3721 mine is a strange size 74 wide buy 78 long with the radius edge what size did you put in.Thanks. Tim
We replaced the mattress in our 3400RL with a memory foam RV King from CW the cost was about $375.00 on sale and it's really comfortable.
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Old 12-25-2018, 08:32 PM   #13
Pitchbb9
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Mattress replacement

We have a rv king which wasn’t the same size as a regular king. We lived near Springfield, Missouri. Springfield Mattress Company made us a custom size mattress that has a lifetime warranty. It is wonderful and if it ever gets broken down they will rebuild it fir life.
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Old 12-25-2018, 10:38 PM   #14
Rondo
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We're wit richfaa and we have a queen size sleep number in the unit and will not be without one anymore. We have three sleep number mattresses total and love them!
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Old 01-06-2019, 10:50 PM   #15
Big George
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Quote:
Originally Posted by awheeler View Post
We changed out our king for a queen. Sooo much more room. We purchased the Saatva Adjustable bed. They delivered, setup it up, demonstrated the functions, and hauled away the old mattress - all for free. https://www.saatvamattress.com/


We love it!
Hi! Question is your new bed adjustable? We would love to have an adjustable in uor 3790 but been told it not possible. Any info would be appreciated.

Thanks
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