interior close up with all your backyard tools

Sentinel

Name: Sentinel
Brand: Shed Liquidators
SKU: 18107-8
Price: 4599.0 USD
Availability: InStock
Rating: 5 (3 reviews)

$4,599~~$9,999~~

Save 55% $5,400

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Pre-cut, ready-to-build DIY shed kit with curbside delivery
Professional installation available
8-ft wide double doors provide convenient access to tractors, ATVs wheelbarrows and more
32-in wide side entry door provides alternative access to grab items on the go
Includes two windows with screens for natural light and airflow
7-ft tall sidewalls and 10-ft peak height offers plenty of height to store shovels, rakes, ladders and more
10-year material warranty
DIY kit does not include a floor system. Install on concrete slab or build your own floor

Sizes

12 x 20

What fits inside?

Assembly Options

Add Professional Installation

Shingles & Floor System with Runners Included

$1300

Shed Buying Guide

Shed size
When choosing the size of your new shed it’s important to consider several factors: floor space, overhead and wall hanging space, walk-around space, and workspace (if needed).

Yard Location
When deciding where to put your shed, make sure you decide on a spot that is in a high area of your yard, allows for 3 ft. of clearance on all sides, and is level. If your ground is not level, read our guide onhow to easily prepare your yard for a level shed. Also, be sure to consider a spot in your yard that lets in the most sunlight.

Homeowner’s Association/Permits
Check with your HOA or local municipality to ensure your shed meets any restrictions on building sizes, siding, roof type, and foundations. Shed Liquidators is not responsible for obtaining permits.

To learn more, check out our shed buying guide.

Assembly Instructions

Sentinel-12x20-Shed-DIY-Instructions.pdf View Download

Delivery & Installation

We will contact you a few days after placing your order to schedule your installation. Our installation lead times are about 4-8 weeks from the order date, and you will get text message updates throughout the process. The installer will arrive with your shed kit ready to install on-site.

Maintenance

Our sheds are manufactured with the utmost care to ensure every structure meets our engineering standards. Like your home, your new shed will require occasional maintenance to ensure many years of use. In addition to re-painting your shed as needed, you must perform other maintenance:

Once your shed is built, be sure to caulk all joints.
Keep all grass and other plants trimmed around the perimeter of the shed.
Do not mound soil or mulch against the siding.
Do not stack anything against the exterior of your building, such as firewood.
Locking doorknobs or levers should be sprayed with silicone or another lubricant to maintain the locking mechanism and prevent freezing in cold climates.
We do not recommend insulating or heating your building without proper ventilation.
Do not let sprinklers spray your building.

Returns

DIY kits: 30-day returns accepted if unassembled and in like-new condition; 25% restocking fee will apply to DIY kits only. Installed: no returns after installation. Read our return policy for more details.

Features

Ready to Assemble Kit

Kit includes pre-cut wood, floor system, hardware and pre-assembled doors

Primed for Paint

Shed is primed and ready for paint

*Paint and caulk not included

Extra-Wide Double Doors

Easy access to ATVs, lawnmowers and more

Ultimate Defense

LP® SmartSide® siding resists hail, wind, moisture, decay and termites

Anti-sagging Hinges

Evenly distributes the weight of the door to eliminate sagging

Weather Ready

Built like your house to withstand strong winds and heavy snow loads

Specs

Dimensions (W x D X H) : 12-ft x 20-ft x 10-ft 1-in

Cubic Feet Storage : 2,070

Square Footage : 240

Door Opening Dimensions (W x H) : Double doors: 96-in x 72-in | Side Door: 32-in x 70-in

Wall Framing : 2-in x 4-in

Stud Spacing : 24-in o.c.

Roof Pitch : 6/12

Max Roof Load : 7,200 lbs. (30 lbs. per sq. ft.)

Type of Floor : Floor not included when purchased as a DIY kit. Install on a concrete slab or build your own floor.

Max Wind Resistance : 115 m.p.h.

Assembled Weight : 4,094 lbs.

Paint and Caulk Needed (not included) : Siding: 4 gal. | Trim: 4 qt. | Doors: 2 qt. | Caulk: 6 tubes

Warranty : 10-year limited material warranty. 1-year warranty on labor

DIY Shed How-To

Ready to Assemble Shed Kit

Pre-cut wood
Pre-assembled doors
How-to videos
Printed instructions
US based support
Note: DIY kit does not include a floor system, nails, shingles and paint.

How-to Videos

Shed Kit Assembly Process

How to Level

How to Shingle a Roof

How to Build a Shed

Overall rating: 5.0 / 5 from 3 reviews.

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Review highlights

Reviews

My family loves this shed!

"My family loves this shed! It arrived quickly after ordering in about 3 weeks. My experience with customer service and scheduling the install was great as the representative was very responsive. The installation was easy to schedule and the structure went up quickly in one and a half days. We are pleased that it fits several small vehicles (lawn tractor, mule, etc. ) as well as many of our outdoor tools and extra supplies. I plan to add my own shelving which will increase storage space. The price was great and allowed us to purchase a shed slightly larger than originally intended. We still need to paint the shed, but look forward to many years of versatility with this outdoor structure. I highly recommend purchasing this shed for your outdoor storage needs."

— Jeb K. (5/5)

I love my new shop

"I love my new shop"

— Traci R. (5/5)

Better than I thought

"I thought thebshed would be good quality based on the literature online and reviews. . It ended up being a better looking unit than I thought it would be. . looks great. solid enough to last. . ."

— Daniel C. (5/5)

Q&A

Shed Prep

Choose a spot on high ground to prevent water pooling.

Choose a build site that is level within 6 in.

Ensure the area has 4-ft of clearance around and above the shed.

Work with your HOA or local municipality to secure permits and permission.

Frequently Asked Questions

What is included with the purchase of a shed?

Our sheds come with pre-cut lumber pieces ready to assemble on-site by our professional installers. Each shed has a base shed kit, a floor system, fasteners, runners, shingles, and door hardware. Some models come with extras like shelves, a storage loft, a threshold, or vents.

Do I need to do anything to prepare my yard prior to installation?

Before installation, choose a build site with a 3-foot clearance on all four sides and above. The site must be free from trees, shrubs, limbs, or other debris. The site also needs to be level within 6 inches. Your installer will level up to 6 inches at no additional charge. If your site is out of level by 6 inches but is under 18 inches, we offer a leveling package for an additional charge. You’ll need to provide access to electricity within 150 feet of the unit, as well as 3-foot minimum unobstructed access for installers to carry your materials to the building site, or additional charges will apply. Keep pets inside or on a leash away from the installation area.

Do the sheds come with a warranty?

All our sheds come with a 10-year limited material warranty, with some materials extending beyond 10 years. Standard shingles have a 25-year limited warranty. Architectural/dimensional shingles have a limited lifetime warranty. Louisiana Pacific® SmartSide® siding and trim has a 50-year limited material warranty. Professional installation comes with a 1-year labor warranty.

Will you provide a permit for my shed?

Unless you live in an area where professional contractors are required to pull the permits, customers can pull their own building permits. We can provide the drawings to assist with this. If you would like us to pull the permit for you, we offer a permit package that covers the procurement of the permits. Every municipality has different permit requirements and fees, so once we receive your order, our local warehouse will reach out to you to get the necessary documentation (I.e., plot plan, seismic testing, etc.). Depending on the permit cost or required documentation, additional fees will vary by municipality.

Do the sheds arrive painted and fully assembled?

Our sheds come with pre-cut pieces ready to assemble on-site. This means your shed gets delivered and installed without removing a fence or creating a large clearance to get to the build site. The shed will come factory-primed and ready for you to paint.

Can the shed be moved once it’s built?

If your shed is built on 4x4 runners (aka skids), it can be loaded onto a flatbed truck and transported to another location. We recommend using a towing or barn moving service to do this. The shed should be empty before moving. Additional supports or bracing may be needed inside the building before transporting. Check local zoning ordinances for transportation due to width and height restrictions.

Why are wood sheds better than other build materials?

Wood sheds are constructed with many of the same materials as your home. They look great and are built to last, meeting or exceeding most building codes and HOA requirements. Aesthetics Wood sheds have an attractive look that comes in various architectural styles that can be painted and shingled to match your house. Durability Wood is known to be an extremely strong and durable material. Our sheds have a sturdy frame and floor system to withstand strong winds, heavy snow, and heavy equipment. Weather Resistant We use treated LP® SmartSide® siding that protects the shed from hail, wind, moisture, fungal decay, and termites. Customizable Whether you're using it for storage or extra workspace, our wood sheds can easily be modified for any use. Dream big and make the space exactly what you need it to be.