Every size we rent

Storage Unit Size Guide

Twelve sizes across two facilities, from a 5 × 10 closet-sized unit to 13 × 40 feet of outside parking. Here is what each one typically holds and where to find it.

Smallest: 5 × 10 (50 sq ft)
Largest enclosed: 10 × 40 (400 sq ft)
Outside spaces: 13 × 30 and 13 × 40 ft
Climate controlled: 27 units in Waunakee

Call or text 608-849-6281 See the sizes

Wide paved aisle between a row of red-door units and a row of white-door units in Waunakee — Drive-up units, Waunakee

Drawn to scale

What fits in each storage unit size

Each bar is the real footprint of that unit on the same 40-foot track, so a 5 × 10 and a 10 × 40 can be compared by eye. The red edge is the roll-up door; a dashed outline is an uncovered outside space. Sizes are nominal; measure your largest item before you choose.

Enclosed unit
Outside / drive-up space
Red edge = roll-up door
CCClimate controlled available

Storage unit sizes at JAR Storage, Waunakee and Blue Mounds / Mount Horeb, WI
Size	Footprint to scale	Typically holds	Where
5 × 1050 sq ft		The contents of a walk-in closet or a dorm room: a mattress set, a dresser, a few chairs and a stack of boxes.	Waunakee CC
8 × 972 sq ft		A studio apartment, or a small business's files, samples and seasonal inventory.	Waunakee CC
10 × 10100 sq ft		A one-bedroom apartment: sofa, bed, dresser, a small appliance or two, and boxes. Our most popular size.	Waunakee (CC or drive-up)Blue Mounds
8 × 16128 sq ft		A one- to two-bedroom apartment, or a motorcycle plus the household boxes.	Waunakee
10 × 14140 sq ft		A two-bedroom apartment with an aisle left to walk in.	Waunakee
8 × 18144 sq ft		A two-bedroom home's furniture, in the climate-controlled building.	Waunakee CC
8 × 20160 sq ft		A two-bedroom home, or a small car with room in front of it.	Waunakee
10 × 20200 sq ft		A three-bedroom home with appliances, or a car, a pickup, or a small boat on its trailer.	WaunakeeBlue Mounds
10 × 30300 sq ft		A four-bedroom home, or a vehicle up to about 27 feet with household goods alongside.	Waunakee
10 × 40400 sq ft		A large home, a contractor's tools and materials, or a boat, camper or trailer up to about 37 feet, enclosed.	WaunakeeBlue Mounds
13 × 30 outside390 sq ft		Uncovered parking for a boat on its trailer, a pop-up or a travel trailer up to about 27 feet.	Blue Mounds
13 × 40 outside520 sq ft		Uncovered parking for a fifth wheel, a Class A motorhome or a long trailer up to about 37 feet.	Blue Mounds
	020 ft40 ft

Availability changes week to week. Call or text to check what is open today

How to choose

Five questions to help you choose

What is the biggest single item? A queen mattress is about 5 × 7 feet on its side; a sofa runs 7 to 8 feet long; a full-size pickup needs 20 feet. That item sets the minimum depth.
Will you visit often? If you will be in and out, go one size up and leave an aisle down the middle so nothing has to be unstacked.
How long will it stay? Anything stored through a Wisconsin winter that you would not leave in an unheated garage belongs in a climate-controlled unit. Those are in Waunakee, in 5 × 10, 8 × 9, 10 × 10 and 8 × 18.
Is it a vehicle? Add two feet to the length for the door and the hitch, and count the trailer. Our boat, RV and trailer page matches common lengths to spaces.
Boxes or furniture? Boxes stack to the ceiling and use a unit fully; furniture does not. A house full of furniture usually needs one size more than the box count suggests.

Still not sure? Describe what you have and we will tell you which unit fits. Call or text 608-849-6281

Looking into two open storage units, numbers 10 and 11, from the drive — Drive-up units, Waunakee

Inside a climate-controlled storage unit at the Waunakee facility — Inside a climate-controlled unit, Waunakee

Where the sizes are

Pick a location

Ten sizes in Waunakee, including every climate-controlled unit. Three enclosed sizes plus outside parking in Blue Mounds / Mount Horeb. Both rent month to month with 24/7 access.