What size bulkhead does this use for the hole on the aquarium itself? It states the drain bulkhead sizes but not sizes for the aquarium itself.

They provide hole saw to install overflow.

Is there anywhere i can find the mounting template for this overflow box? i’m trying to see if it’ll match the holes in a synergy reef shadow

I have not seen a template online. The holes on bottom fit 3/4" bulk heads and pvc. I believe the whole on the back with the mounting bulkhead is 1 3/8". My partner and I drilled our own hole for mounting based on the size of the bulkhead and hole on the back. The product does come with a glass cutting drill bit for making the correct size hole.

What is the size of the hole saw?

Not sure exactly size, I think its 2" however they do provide you with hole saw for the job.

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Low Profile External Overflow Box (800 GPH)

Product ID: 183807248

Details

Brand
Fiji Cube
Color
Black
Item Weight
2.27 kg
Material
Polyvinyl
Shape
Rectangular
Special Feature
Breathable

📏Slim & compact 3/8” acrylic build

🔇Quiet water flow with dual lid covers

🛠️DIY install kit with template & diamond saw

Description

🌊 Elevate your aquarium game with silent, sleek overflow innovation!

SLEEK SPACE SAVER - Slim, compact design fits any aquarium setup seamlessly
WHISPER QUIET FLOW - Front and back lid covers minimize noise for peaceful tank ambiance
DIY READY INSTALLATION - Includes template, diamond hole saw & PVC pipe for quick setup
EFFORTLESS MAINTENANCE - Detachable skimmer box makes cleaning a breeze
CUSTOM OVERFLOW CONTROL - Supports Herbie or Bean Animal style overflow for advanced tank management

The Low Profile External Overflow Box (800 GPH) by Fiji Cube offers a slim, durable 3/8” acrylic design compatible with rimless, eurobrace, and standard trim tanks. It features quiet water flow via front and back lid covers, a detachable skimmer box for easy maintenance, and comes with a DIY installation kit including a template, diamond hole saw, and emergency PVC drain pipe. Supports advanced Herbie and Bean Animal overflow styles for professional-grade aquarium setups.

Specifications

ASIN	B07TTYH7FH
Additional Features	Breathable
Brand	Fiji Cube
Brand Name	Fiji Cube
Color	Black
Customer Reviews	4.5 out of 5 stars 24 Reviews
Global Trade Identification Number	00761856629813
Included Components	Front and back lid covers, template & diamond hole saw, PVC pipe for emergency drain installation
Item Shape	Rectangular
Item Type Name	Item
Item Weight	2.27 kg
Manufacturer	Fiji Cube
Manufacturer Part Number	367639
Material	Polyvinyl Chloride
Material Type	Polyvinyl Chloride
Model Number	367639
Number of Items	1
Pet Type	Fish
Product Style	Modern
Shape	Rectangular
Special Feature	Breathable
Specific Uses For Product	aquarium for fish
Tank Volume	800 gallons
Target Species	Fish
UPC	761856629813
Unit Count	1 Count
Vivarium Type	Aquarium

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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