1/2" ABS Bulkhead Thread X Thread Dimensions
A - 51mm/2" | B - 70mm/2.75" | C - 32mm/1.25"

3/4" ABS Bulkhead Thread X Thread Dimensions
A - 59mm/2.32" | B - 71mm/2.79" | C - 41mm/1.61"

1" ABS Bulkhead Thread X Thread Dimensions
A - 65mm/2.55" | B - 73mm/2.87" | C - 48mm/1.88"

1 1/2" ABS Bulkhead Thread X Thread Dimensions
A - 90mm/3.54" | B - 82mm/3.22" | C - 64mm/2.56"

2" ABS Bulkhead Thread x Thread Dimensions
A -103mm/4.05" | B - 81mm/ 3.18" | C - 81mm/ 3.18"

Installation Hole Size - Use Diamond Coated Glass Drill Bit for DIY installation

Heavy-duty Schedule 80 PVC bulkheads feature distinct advantages over ABS bulkheads

• O-Rings are 2X as thick as ABS O-Rings
• Schedule 80 construction will far outlast ABS

Selecting a Bulkhead : Click for Guide

1. Measure the diameter of the hole in your aquarium in inches or millimetres.
2. Suggested to choose the largest bulkhead that will fit in the hole in your aquarium.

Example: If your hole diameter is 1.75” then you will want to use a ¾” ABS Bulkhead, or you could choose between the ½” and ¾” Schedule 80 Bulkheads.