Lifetime Single Entrance Plastic Shed 15×8

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This post was last updated on October 19th, 2022 at 11:08 am

Lifetime single entrance plastic shed 15x8 model 6446

Lifetime 6446 Outdoor Storage Shed

If you need a lot more space for storage, somewhere to keep gardening items, or even if you fancy setting up a small home gym or a DIY work area, the 6446 shed could be worth considering.

Shed Features

This Lifetime single entrance plastic shed measures 15x8 feet and is a steel-reinforced plastic design with central doors. It has a lot of storage space - 749 cubic feet - enough to cope with most storage or recreational needs.

The low maintenance shed structure is designed around dual-wall, UV-protected, high-density polyethylene panels, with the walls and doors being additionally steel-reinforced.

The high-pitched roof facilitates quick snow and rain drainage.

Screened vent at each end of shed.
Small skylights in 6446

Natural lighting comes in via six small skylights and two shatter-proof polycarbonate windows that open half way. Windows have decorative shutters either side.

Two screened vents provide straight through ventilation.

Corner shelf unit for Lifetime sheds
Lifetime peg strips for hanging hand tools.

Some internal storage is provided by two 90-inch x 9-inch shelves, four corner shelves, and two peg strips for hanging hand tools.

You can add additional similar storage using Lifetime's customizable shelving and storage system, which you need to buy separately.

Shed Specifications

  • Manufacturer: Lifetime Products.
  • Model: 6446.
  • Product made: In USA.
  • Materials: Dual wall polyethylene and powder-coated steel.
  • Exterior Dimensions: 15 ft. Width x 8 ft. Depth x 7 ft. 10.8" Height (Nominal).
  • Interior Dimensions: Width 174 inches x Depth 90 x Headroom 80.4 inches.
  • Door opening: Width 56.4inches x Height 75.6 inches
  • Color: Putty/Brown.
  • Capacity: 749 cubic feet / 108.75 square feet
Lifetime 6446 shed dimensions.
Lifetime 6446 shed wall cross section.

Shed Delivery

Your shed will likely be delivered in three or four large, heavy boxes. You will need several people to move them off your driveway near where you intend to assemble the shed. Your order usually ships within five to seven days.

Tools Needed to Build the Lifetime 6446

Lifetime suggests the following tools for shed assembly:

  • 2 x 7/16th spanner
  • 3/8 spanner
  • Adjustable spanner
  • Pliers
  • Rubber mallet
  • Box knife
  • Philips head screwdriver
  • 2 x Stepladder (needed to fit roof)
  • Power drill
  • Work light
  • Flashlight
  • Safety glasses

Shed Assembly

It would be best to have the shed site prepared, and the foundation laid before delivery. In the instruction manual Lifetime say:

1.1: The actual dimensions of your shed (at its widest and longest points) are 15’ x 8’. Be sure to select a site that will accommodate these measurements. The base of the shed is slightly smaller than this, so you will need to create a level surface that is at least 178” x 93 1/2”. We recommend using a level cement or patio style surface. This will provide the best long-term performance for your shed.

Lifetime 6446 15 x 8 Shed

Owners Manual with Assembly Instructions

Before putting any parts of the shed together, you should read the instructions thoroughly. And don't be tempted to assemble out of the building sequence that Lifetime recommends.

You can ensure the components fit together as they are supposed to if you take the trouble to trim off any flashing that remains on the plastic components. Flashing is the excess plastic that sometimes remains on plastic parts after they come out of the injection molding machines.

Trimming will add more time to the overall build time but is worth the extra effort.

Pros & Cons


  • Attractive appearance and low maintenance design.
  • Easy to assemble. 
  • Rugged steel-reinforced construction.
  • Extra roof strength from heavy-duty steel trusses.
  • Lockable steel-reinforced doors.
  • Watertight.
  • Ample head clearance.
  • Slip-resistant floor.
  • 10 year limited warranty.


  • Not much natural light for a shed this size.
  • Walls will not support very heavy loads from shelving
  • Double doors do not fully open flush with the walls. Not really a problem. 

I mentioned that the shed is easy to assemble, and I'd like to add a couple of caveats. Firstly, like all sheds, you should build on a flat, level base to ensure all components fit snugly. Secondly, you follow the manufacturer's instructions to the letter because Lifetime has evolved the best build sequence for the shed.

Video of How to Fit Shed with Shelving

This video shows a 15 x 8 Lifetime dual-entry shed fitted out with DIY shelving. It's a few years old (so the price mentioned is way out of date), but it's a similar size to the 6446 and gives a helpful insight into what is possible when you put in the extra work.


The 6446 has lots of storage space and is big enough to work in if you wish. I particularly like the centralized door location, which effectively splits the shed into two end areas. There is plenty of room to store gardening and patio items at one end, more storage or create a modest worktop at the other, and park large equipment like a lawn mower just inside the doors.

There's plenty of room to store whatever you want without climbing over things to reach it. If you want to maximize your storage, I'd be inclined to get yourself some free-standing shelf units or build shelving as shown in the video and then organize them with various sizes of storage tubs.

Another choice:

Lifetime 60079 Outdoor Storage Dual Entry Shed, 15 x 8 ft, Desert Sand

Dual entry Lifetime shed

If you'd prefer a dual entry shed similar to the 6446, you could consider the Lifetime 60079.  It's the same size 15 feet x 8 feet but with a few added features. And it costs a bit more.

Check it out at Amazon HERE!

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