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  1. #1
    Fireside Member
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    Mattress Replacement on Happi-jac

    While waiting for our 349m to arrive we would like to order & replace some mattresses. I found the size for the king mattress of the main bedroom but we'd also like to 1) replace the happi-jac mattress and 2) add a topper for the folding bed seats that are underneath. Does anyone know the size for the happi-jack bed along with what size would lay on top of the seats underneath when they are in the bed configuration?

    Thanks
    2021 Grand Design Momentum 349m-r
    - 8k axles, toppers, 3rd ac, Onan, Solar, Outside Entertainment, King Bed, Heat Pump, 3 Season Doors, Dual Pane Windows, Happi-Jac, Rear Al Deck
    2021 Ford F-450 Limited

  2. #2
    Seasoned Camper jjbbrewer's Avatar
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    Ok, from direct measurements

    The top bunk base is 88" side-to-side and 60" front to back
    The bottom seat/bed area is also 88" side-to-side, but 57" front to back.
    Last edited by jjbbrewer; 04-13-2021 at 01:53 PM.
    '21 Grand Design Momentum 349M
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  3. #3
    Fireside Member
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    Quote Originally Posted by jjbbrewer View Post
    Ok, from direct measurements

    The top bunk base is 88" side-to-side and 60" front to back
    The bottom seat/bed area is also 88" side-to-side, but 57" front to back.
    Great. Thank you for getting the dims. Looks like a queen (80 x 60) will fit both areas.
    2021 Grand Design Momentum 349m-r
    - 8k axles, toppers, 3rd ac, Onan, Solar, Outside Entertainment, King Bed, Heat Pump, 3 Season Doors, Dual Pane Windows, Happi-Jac, Rear Al Deck
    2021 Ford F-450 Limited

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