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Sun-Mar GTG Urine Diverting Composting Toilet

GTG Urine Diverting Composting Toilet by Sun-Mar 

Introducing the GTG Urine Diverting Composting Toilet by Sun-Mar! The GTG Urine Diverting Composting Toilet is Sun-Mar's smallest and most economical toilet ever! Despite its compact build, the GTG features an unrivaled composting capability with its solid and liquid waste separation preventing black water build-up, avoiding odors, and improving the overall composting toilet process.  

The GTG Urine Diverting Composting toilet is the ideal choice for people and families who are always on the go. Set it up for your home/tiny home, cottage, cabin, boat, farm, warehouse, garage, barn, stable, RV, and the list goes on and on! This is made possible with the GTG's compact and portable build.

Why you should get the Sun-Mar GTG Urine Diverting Composting Toilet?

Sun-Mar GTG Urine Diverting Composting Toilet
  • Easy Set-up: 

    The Sun-Mar GTG is a very user-friendly toilet that anyone can set it up on their own. Complete with all the components you need and a user manual, you can have your GTG toilet operational within just 2 minutes.
  • Two Chambers:

    Designed with two chambers, the GTG composting toilet is able to effectively separate liquid from solid waste. This feature improves the overall composting process of your Sun-Mar Gtg Composting Toilet. 
  • Low Maintenance:

    Using and Maintaining this toilet is very easy. All you have to do is to empty the contents of your solid and liquid compartments when full.
  • Cost Effective:

    The Sun-Mar GTG is a waterless toilet which means you are saving money with the installation setup since it requires no plumbing. You can install it on your own without ever needing to call a plumber. No water means less expense in the long run making the GTG an investment that pays for itself. 

Sun-Mar GTG Urine Diverting Composting Toilet Inclusions

  • Sun-Mar GTG Toilet - with Liquids Chamber and Solids Chamber
  • Hardware Kit - 2 Floor Brackets, 2 Floor Bracket Bolts, and 2 Floor Bracket Screws
  • User/Installation Manual
  • 1 Brick of Compost Magic (Coco Fiber)
  • 110v/240AC to 12 V DC Power supply

Sun-Mar GTG Urine Diverting Composting Toilet Specs


Thanks to the easy access and removable liquid and solid chambers, the GTG technically has an unlimited capacity.

Solid Chamber


Liquid Chamber 

Weight and Dimensions

  • Height:    19.8″
  • Width:     15.75″
  • Depth:    24″
  • Weight: 25 lbs


  • Shipping weight:  33 lbs
  • Seat Height:    18″
  • Capacity:    Unlimited
  • Electrical Specifications - 12V dc fan 0.6W (110V, 240V)

Free shipping on a variety of products!

As soon as your product is on its way out of the warehouse, we will email you the tracking number for your shipment. 

Free Shipping on a variety of products! If the product you're interested includes free shipping, it will be indicated on the product page. Otherwise, shipping costs will be calculated based on the size of the package and your location.

No Risk Damage Policy

Easy Returns

For more information about Shipping and Returns CLICK HERE

Price Guarantee

We care about our customers and want to offer the best prices available for our top notch products.

Conditions of our 100% Price Match Guarantee:

  • The item must be purchased from us before we can match it

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

  1. We care about you. We don't want to just sell you something and never hear from you again. We know that in order to get return business, we need to provide not only good products, but good customer service.
  2. We're a family owned business! My wife and I run Wild Oak Trail, and when you buy from our store, you're actually making a difference to our family!
  3. We LOVE being prepared. In uncertain times, it feels really good knowing that we have backup power, food and water ready to go!
  4. We source QUALITY. We expect every one of our customers to be happy with their purchase and tell their friends and family about it!