What Size Storage Unit Fits a Class A Motorhome or Fifth Wheel?
Many Class A motorhomes and fifth wheels require significantly more space than a standard storage unit. In many cases, a 15×50 high-bay storage unit provides the length and clearance needed, but the exact fit depends on your RV’s dimensions, slide-outs, and accessories.
Will Your RV Fit? Quick Check
Before reading further, check your RV against these four numbers:
- ✓ Total length is under 50 feet (bumper to bumper, including racks)
- ✓ Total height is under 16 feet (including roof AC, antennas, and vents)
- ✓ Width with mirrors extended clears the entry (typically not an issue at 15 feet wide, but confirm if you have oversized mirrors or awnings)
- ✓ Slide-outs can stay retracted for the duration of storage
If your RV meets all four checks, a 15×50 unit is likely to be a suitable option, though exact fit should always be verified using your RV’s actual dimensions.
Who Typically Needs Large RV Storage?
Large Class A motorhomes and fifth wheels are especially common among seasonal travelers, long-distance RV owners, and people who store their RV between trips, during winter months, or while not actively traveling. Choosing the right storage unit size helps protect the vehicle while ensuring it can be parked safely and conveniently.
Choosing a storage unit with adequate length, door clearance, and climate protection helps reduce wear on the RV while it’s not in use.
How Large Is a Typical Class A Motorhome?
Class A motorhomes are the largest category of drivable RV, which is why storage size becomes a real constraint for owners. Most fall between 30 and 40 feet long, with luxury diesel pushers sometimes exceeding that. Height typically runs 11 to 13 feet once roof AC units, vents, and satellite domes are factored in, and that height, not just length, determines whether a unit’s door clearance will work.
How Large Is a Typical Fifth Wheel Camper?
Fifth wheels run 28 to 40 feet long, with larger toy haulers sometimes longer. The key difference from a length-only perspective: the raised front cap over the truck bed pushes total height to 12-13.5 feet even though the trailer body sits lower. That raised front is the main reason fifth wheel owners need to double-check door clearance, not just unit depth.
What Size Storage Unit Fits a Class A Motorhome?
The right unit size depends on the motorhome’s actual length, not just its class.
| RV Length | Fits in 15×50 Unit? | Remaining Length Margin |
| Under 30 ft | Yes | 20+ ft to spare |
| 30–35 ft | Yes | 15-20 ft to spare |
| 35–40 ft | Yes | 10-15 ft to spare |
| 40–45 ft | Likely, verify exact length | 5-10 ft to spare |
| 45–49 ft | Possible, measure carefully | Under 5 ft to spare |
| 50 ft or more | Not guaranteed | Confirm with exact measurements |
This table reflects fit within a large RV storage unit measuring 50 feet in depth. As a motorhome’s length approaches 50 feet, the margin for parking, maneuvering, and closing the door narrows, so exact measurements matter more.
What Size Storage Unit Fits a Fifth Wheel?
Fifth wheel sizing works similarly, but the hitch and raised front section change how length is measured. Most fifth wheels in the 28- to 35-foot range fit comfortably in a 15×50 unit, with substantial room left over. Larger fifth wheels approaching 38–40 feet, especially toy haulers with rear ramps, use up more of that depth and leave less buffer for maneuvering or storing gear inside the unit alongside the trailer.
Can a 15×50 Storage Unit Fit a Class A Motorhome?
In most cases, yes. A 15×50 unit offers 50 feet of length and 15 feet of width, which comfortably accommodates the body length of most Class A motorhomes up to 50 feet, while leaving lateral space for mirrors, slide-out awnings, and side-mounted storage compartments.
Length: The 50-foot depth covers the large majority of Class A motorhomes on the road today.
Width: At 15 feet wide, there’s room beyond the motorhome’s body width (typically 8–8.5 feet) for clearance on both sides.
Clearance: With a 16-foot door, most Class A roof equipment clears without issue, though owners with raised satellite domes or roof racks should confirm their exact height.
Maneuverability: Backing a 35- to 40-foot motorhome into a unit takes some practice, but the extra width in a 15-foot-wide unit makes straightening out easier than in a narrower space.
Can a 15×50 Storage Unit Fit a Fifth Wheel?
Yes, for the vast majority of fifth wheels. The 50-foot length accommodates the trailer body even with the raised front cap factored in, and the 16-foot door clearance is generally sufficient for the taller front profile that fifth wheels have compared to travel trailers.
Common scenarios: A 32-foot fifth wheel with a single slide-out fits with significant room to spare. A 38-foot triple-slide fifth wheel fits more snugly, with less margin for error when backing in.
Why Door Height Matters as Much as Length
Length gets the most attention, but door height is often the actual limiting factor for large RVs.
Roof-mounted AC units typically add 12 to 16 inches to an RV’s overall height beyond the roofline itself.
Antennas and satellite domes can add several more inches, and some are not retractable.
Additional accessories like roof racks, vents, or ladder-mounted equipment all factor into total clearance height.
A 16-foot door clearance, like the one at Finish Line RV & Boat Storage, gives most Class A motorhomes and fifth wheels enough headroom to clear rooftop equipment without needing to remove or lower anything before pulling in.
How to Measure Your RV Before Renting Storage
Before reserving any unit, measure your RV directly rather than relying on the manufacturer’s listed specs, since aftermarket additions change the numbers.
- Measure total length from the front bumper to the rear bumper, including any rear ladders or bike racks.
- Measure total height from the ground to the highest point, including AC units, vents, and antennas.
- Measure total width including mirrors if they don’t fold in.
- Check slide-out depth and confirm whether slides need to stay retracted in storage.
- Note hitch length for fifth wheels, since the hitch and raised front section add to the parked length.
- Compare your numbers to the unit’s depth and door clearance before booking.
Indoor vs Outdoor Storage for Large RVs
| Factor | Indoor (Climate-Controlled) | Outdoor |
| Weather exposure | Protected from sun, rain, snow | Fully exposed |
| Seal and roof condition | Slower deterioration | Faster UV and moisture damage |
| Interior climate stress | Reduced temperature swings | Extreme heat/cold cycling |
| Pest and debris exposure | Minimal | Higher |
| Long-term ownership cost | Lower maintenance over time | Higher risk of seal, roof, and paint repairs |
Indoor climate-controlled storage can help prevent many of the common RV storage mistakes Michigan owners make, especially during Michigan’s harsh winters.For RVs and boats representing a significant investment, indoor RV storage reduces the wear that comes from sun exposure, temperature swings, and moisture, all of which affect seals, seams, and finishes over time.
When a 15×50 Climate-Controlled Unit Makes Sense
Once you’ve confirmed your RV will fit, the next question is whether indoor, climate-controlled storage is worth the added protection compared to outdoor storage, especially for a large motorhome or fifth wheel representing a significant investment.
A 15×50 climate-controlled unit makes the most sense for:
- Long-term storage between trips, especially over winter months
- Premium RVs where paint, finishes, and seals are a larger investment
- Class A owners who want roof equipment to clear without modification
- Fifth wheel owners who want indoor protection for the raised front cap and slide-out seals
Finish Line RV & Boat Storage offers the only climate-controlled 15×50 high-bay storage option in Montcalm County, built specifically for RVs and boats that need both length and clearance.
Reserve a 15×50 Climate-Controlled Storage Unit
If your Class A motorhome or fifth wheel fits within the dimensions outlined above, you can reserve a 15×50 climate-controlled unit at Finish Line RV & Boat Storage. Units include 16-foot door clearance, month-to-month rental at $475/month, and online reservations, so you can secure space without a long-term commitment.
5. FAQ Section
What size storage unit fits a Class A motorhome?
A 15×50 storage unit fits most Class A motorhomes up to 50 feet in length, with enough width and door clearance for mirrors, slide-outs, and rooftop equipment.
Can a 40-foot RV fit in a storage unit?
Yes, a 40-foot RV can fit in a 50-foot-deep unit, but the margin for error is smaller. Measure your exact length, including any rear-mounted accessories, before reserving.
What size storage unit do I need for a fifth wheel?
Most fifth wheels between 28 and 40 feet fit comfortably in a 15×50 unit, accounting for the raised front cap and hitch length.
How tall can an RV be for indoor storage?
With a 16-foot door clearance, most Class A motorhomes and fifth wheels fit without issue, including rooftop AC units and antennas. Measure total height including all roof equipment to confirm.
How do I measure my RV for storage?
Measure bumper-to-bumper length, total height including roof equipment, width including mirrors, and slide-out depth before comparing those numbers to the unit’s dimensions.
Is indoor RV storage worth it?
Indoor, climate-controlled storage protects against sun, moisture, and temperature swings that otherwise stress seals, roofs, and finishes over time, which can reduce long-term maintenance needs.
Can slide-outs stay extended in storage?
This depends on the unit’s width and the RV’s slide-out depth. In most cases, slide-outs should remain retracted while in storage unless the unit has confirmed extra width to accommodate them.
What is the best storage option for a large motorhome?
A climate-controlled unit with sufficient length and at least 16 feet of door clearance, like a 15×50 high-bay unit, gives large motorhomes room to park and protection from weather exposure.
How much extra space should I leave around my RV in storage?
Ideally, a storage unit should provide enough room for safe entry, exit, and maneuvering rather than fitting the RV wall-to-wall. Extra space can also make it easier to access compartments, inspect the vehicle, and avoid accidental contact with walls or stored equipment.
