Gemini² Dual Containment® Tanks

Gemini² Dual Containment® Tanks have the same great features and benefits as cylindrical Gemini plastic tanks but have a larger capacity per footprint. These square tanks have 22% more capacity than cylindrical tanks of the same size. All tanks meet or exceed secondary containment regulations set under EPA 49CFR. These tanks are designed with a pump mounting surface, female threaded connections, and twist lid inspection port. The integral mouse door, molded directly into most Gemini models, is a recessed mouse door that allows for the inexpensive installation of an optional dual wall bulkhead fitting for flooded suction and bottom fill applications (fittings sold separately). The ProChem® Tank Stacker™, sold separately, is designed for tank installations where space is limited and can hold 10 and 20 gallon Gemini²® tanks. Tanks are also available by special order in heavy duty 1.9 specific gravity or XLPE 1.5 or 1.9 specific gravity; contact us for a quote.

  • Molded from linear polyethylene
  • 8" or 16" vented twist lid
  • 1/4" interstitial fitting for detecting leaks in the secondary tank
  • Exceeds EPA requirements for dual containment tanks
  • Small footprint holds maximum capacity in a small area
  • Specific gravity rating: 1.5
  • Maximum temperature: 130°F
  • NSF/ANSI/CAN 61 certified
  • Dimensions are approximate
  • Level gauges sold separately
Item # Description Catalog Pg. Price Add to Cart
Gemini² 10 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 14" L x 14" W x 22" Hgt.
Item 3928
425.67/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
425.67/Each
Gemini² 10 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 14" L x 14" W x 22" Hgt.
Item 3929
425.67/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
425.67/Each
Gemini² 20 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 18" L x 18" W x 24" Hgt.
Item 3913
582.09/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
582.09/Each
Gemini² 20 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 18" L x 18" W x 24" Hgt.
Item 3914
582.09/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
582.09/Each
Gemini² 40 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 20" L x 20" W x 37-1/4" Hgt.
Item 3930
873.24/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
873.24/Each
Gemini² 40 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 20" L x 20" W x 37-1/4" Hgt.
Item 3931
873.24/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
873.24/Each
Gemini² 70 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 24" L x 24" W x 41" Hgt.
Item 3932
1241.33/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
1241.33/Each
Gemini² 70 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 24" L x 24" W x 41" Hgt.
Item 3933
1241.33/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
1241.33/Each
Gemini² 120 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 32" L x 32" W x 50" Hgt.
Item 5475
2171.59/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
2171.59/Each
Gemini² 120 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 32" L x 32" W x 50" Hgt.
Item 5476
2171.59/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
2171.59/Each
Gemini² 175 Gallon Natural Square Dual Containment Tank with 8" Twist Lid - 35" L x 35" W x 57" Hgt.
Item 24883
2658.13/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
2658.13/Each
Gemini² 175 Gallon Blue Square Dual Containment Tank with 8" Twist Lid - 35" L x 35" W x 57" Hgt.
Item 24884
2658.13/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
2658.13/Each
Gemini² 240 Gallon Natural Square Dual Containment Tank with 16" Twist Lid - 46" L x 46" W x 43-3/8" Hgt.
Item 24885
3490.26/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
3490.26/Each
Gemini² 240 Gallon Blue Square Dual Containment Tank with 16" Twist Lid - 46" L x 46" W x 43-3/8" Hgt.
Item 24886
3490.26/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
3490.26/Each
Gemini² 340 Gallon Natural Square Dual Containment Tank with 16" Twist Lid - 46" L x 46" W x 57-3/8" Hgt.
Item 24887
3870.87/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
3870.87/Each
Gemini² 340 Gallon Blue Square Dual Containment Tank with 16" Twist Lid - 46" L x 46" W x 57-3/8" Hgt.
Item 24888
3870.87/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
3870.87/Each
Level Gauge for 10 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 3955
184.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
184.82/Each
Level Gauge for 20 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 3956
184.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
184.82/Each
Level Gauge for 40 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 3957
184.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
184.82/Each
Level Gauge for 70 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 3958
184.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
184.82/Each
Level Gauge for 120 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 3987
184.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
184.82/Each
Level Gauge for 175 Gallon Gemini² Dual Containment® Tank - Stainless Steel & PE
Item 24895
179.57/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
179.57/Each
Level Gauge for 10 Gallon Gemini² Dual Containment® Tank - PVDF
Item 3959
653.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
653.11/Each
Level Gauge for 20 Gallon Gemini² Dual Containment® Tank - PVDF
Item 3960
653.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
653.11/Each
Level Gauge for 40 Gallon Gemini² Dual Containment® Tank - PVDF
Item 3961
653.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
653.11/Each
Level Gauge for 70 Gallon Gemini² Dual Containment® Tank - PVDF
Item 3962
653.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
653.11/Each
Level Gauge for 120 Gallon Gemini² Dual Containment® Tank - PVDF
Item 3988
653.11/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-313
653.11/Each
Level Gauge for 175 Gallon Gemini² Dual Containment® Tank - PVDF
Item 24896
633.82/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
NEW
633.82/Each
ProChem® Tank Stacker™ for 10 to 20 Gallon Gemini & Gemini² Tanks & 2.1 Gemini Pump Containment Enclosures
Item 18827
1116.66/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-312
1116.66/Each