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Fifth Wheel

Keystone RV Alpine Avalanche Edition 366LS

You need a space at least 43′ 10″ long.

At RV Storage Depot that’s a 10×45 space.

Length
40′ 10″overall
Width
—not published
Height
13′ 4″as listed
Keystone RV Alpine Avalanche Edition 366LS in a 10′ by 45′ spaceTop-down drawing to scale. The vehicle is 40′ 10″ long and of unpublished width, leaving 4′ 2″ of length.40′ 10″45′ space4′ 2″ spareWidth not published · space 10′ wide
To scale: your rig in a 10×45 indoor valet space.

Valet makes a big rig easy

A fifth wheel or Class A is a lot to back into a stall every trip. With valet, our team parks it and has it staged when you call ahead. Check roof AC height before choosing indoor. At Norwalk and Altamonte Springs: At 13′ 4″ tall it won't clear the 14′ indoor door: we leave 1′ of clearance, so indoor takes rigs up to 13′ tall. Outdoor is the fit here.

Where to store it

  1. RV Storage Depot – Great Park

    Irvine, CA

    Outdoor self parking only here.

    Outdoor Self Parking12×48Available

    Fits comfortably. 7′ 2″ of length to spare.

    Reserve this 12×48 on the next page

    Availability as of 2026-10-26, approximate.

  2. RV Storage Depot – Norwalk facility

    RV Storage Depot – Norwalk

    Norwalk, CA

    Outdoor Valet10×45Only 2 left

    Fits, tight on length. Back in slowly and confirm your exact length with the office before booking.

    Reserve this 10×45 on the next page

    On the next page, find 10×45 and tap Select. Then choose Outdoor Valet at $450 a month. The first card there may show a different parking label. The tier you choose sets what you book.

    Availability as of 2026-10-26, approximate.

  3. RV Storage Depot – McClellan Park

    McClellan Park, CA

    Indoor Valet10×45Full right now

    Fits, tight on length. Back in slowly and confirm your exact length with the office before booking.

    Height isn't a limit for indoor storage here.

    Join the waitlist · (916) 569-8520

    Availability as of 2026-10-26, approximate.

  4. RV Storage Depot – Altamonte Springs

    Altamonte Springs, FL

    Outdoor Self Parking11×45Available

    Fits, tight on length. Back in slowly and confirm your exact length with the office before booking.

    Reserve this 11×45 on the next page

    Availability as of 2026-10-26, approximate.

Reserve opens RV Storage Depot’s checkout: no call needed.

Keep reading

Space guideWhat fits in a 10×45?Every boat and RV in our guide that parks comfortably in this size.GuideIndoor, outdoor, or valet for an RVRoof AC height, UV on seals and tires, and what valet saves you.How-toMeasure your RV the way we doThree numbers, one tape, five minutes. Bring them when you book.

How we sized it

  • Length needed: 40′ 10″ (manufacturer’s overall length) + 3′ to back in and close up = 43′ 10″.
  • Width: not published by the manufacturer. Width never rules out a space; up to 8′ 6″ fits.
  • Indoor: height + 1′ must clear the indoor door listed for the space.
  • Specs: Keystone RV published specifications, checked 2026-10-19.
  • Vehicle Storage Size Guide methodology
  • Last updated 2026-10-21.

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