--- title: 3700L Underground Holding Tank date: 2022-03-10T12:19:00+11:00 author: Walker Designs canonical_url: "https://www.orionproducts.com.au/3700l-underground-holding-tank" section: Site Content --- 1. [ Home ](https://www.orionproducts.com.au/) 2. [ Bloo Septic Tanks ](https://www.orionproducts.com.au/bloo-septic-tanks) 3. [ Underground Holding Tanks ](https://www.orionproducts.com.au/underground-holding-tanks) 4. 3700L Underground Holding Tank # **3700L** Underground Holding Tank Product Code: **UHH3700** In response to the demand for a quality durable rainwater tank that will stand the test of time, Orion Tanks Tasmania have created a comprehensive range of tanks with both traditional and contemporary styles. We have been manufacturing rainwater tanks for over 20 years, and we understand your needs. ![Length](/assets/images/length.svg)Length 2400mm ![Width](/assets/images/width.svg)Width 1830mm ![Height](/assets/images/height.svg)Height 1465mm ![Width](/assets/images/warranty.svg)Warranty 7 years pro-rata ![Width](/assets/images/data-sheet.svg)Download [Data Sheet](/genpdf/3700l-underground-holding-tank) ![3700 litre underground water tank](https://www.orionproducts.com.au/volumes/images/rainwater-tanks/Underground-Water-Tanks/_1500x1500_letterbox_center-center_80_none/110717/3700-litre-underground-water-tank.webp) ![3700 litre underground water tank](https://www.orionproducts.com.au/volumes/images/rainwater-tanks/Underground-Water-Tanks/_150x150_letterbox_center-center_90_none/110717/3700-litre-underground-water-tank.webp) In response to the demand for a quality durable rainwater tank that will stand the test of time, Orion Tanks Tasmania have created a comprehensive range of tanks with both traditional and contemporary styles. We have been manufacturing rainwater tanks for over 20 years, and we understand your needs. ![Length](/assets/images/length.svg)Length 2400mm ![Width](/assets/images/width.svg)Width 1830mm ![Height](/assets/images/height.svg)Height 1465mm ![Width](/assets/images/warranty.svg)Warranty 7 years pro-rata ![Width](/assets/images/data-sheet.svg)Download [Data Sheet](/genpdf/3700l-underground-holding-tank) - Product Specifications - Product Description - Downloads **Code:** UHH3700 **Length:** 2400mm **Width:** 1830mm **Height:** 1465mm **Warranty:** 7 years pro-rata **Minimum recommended hole size:** 2700 x 2000 x 1700mm H **Minimum recommended base thickness:** 200mm **Recommended base construction:** 7mm crushed stone, screeded level **Tank material:** LLDPE (Linear Low Density Polyethylene) Complies with AS/NS4766 for potable water **Inlet / Outlet size:** 2 x 2” BSP, 2 x 100mm Rapidseals. Supplied loose for fitment on site The 3700L Underground Holding Tank is one of our mid range options for underground water storage solutions. [ #### 3700L Underground Holding Tank **Data Sheet** ](/genpdf/3700l-underground-holding-tank) ### Make an enquiry [Your information 2 mins](https://www.youtube.com/watch?v=8nqXUIOiD0A) or email direct if you prefer: #### Contact us today ### [1800 752 784](tel:1800752784) We purchased Orion rain water tanks, a septic tank, a fire fighting tank and a domestic supply pump for a new build. Arriving on-time and with contact during the lead-up, we took delivery of some fantastic-looking tanks and have installed them without a hitch. They really match the colour of the shed and we are very happy with the whole kit! The team at Orion truly are easy and professional to deal with and this is evident in the quality of their products and service. **Sam Lees** [More Testimonials](https://www.orionproducts.com.au/gallery-testimonials)