How to Measure Glass Accessories for Your ROOR®

Finding the correct accessory for your ROOR® starts with understanding how glass measurements work. Whether you're replacing a bowl, shopping for a new downstem, or adding accessories to your collection, knowing the proper measurements helps ensure a secure fit and optimal performance.

Fortunately, measuring your ROOR® is simple once you understand the basics.

Why Measurements Matter

Glass accessories are designed to fit specific joint sizes and configurations. Ordering the wrong size can result in accessories that don't fit properly or function as intended.

• Proper fitment
• Secure connections
• Optimal airflow
• Accessory compatibility
• Long-term functionality

Understanding Joint Sizes

The most common ROOR® joint sizes are:

• 14.5mm
• 18.8mm

These measurements refer to the diameter of the glass joint where accessories connect.

Most replacement bowls and downstems are manufactured to fit one of these two standard sizes.

Male vs Female Joints

In addition to size, you'll need to determine whether your accessory requires a male or female connection.

• Male Joint: Inserts into a female joint.
• Female Joint: Receives a male accessory.

Most ROOR® bowls use a male connection that fits into a female joint on the waterpipe.

How to Measure a Bowl

When replacing a bowl, the most important measurement is the joint size.

• Identify whether your joint is 14.5mm or 18.8mm
• Confirm whether the bowl uses a male or female connection
• Match the replacement bowl to the existing joint size

Using the correct joint size ensures proper fitment and performance.

How to Measure a Downstem

Downstems require additional attention because both the joint size and length matter.

To determine the correct downstem length:

• Remove the existing downstem
• Measure from the bottom edge of the ground glass joint
• Measure to the end of the downstem tube
• Do not include the portion inserted into the waterpipe

This measurement is commonly used when selecting a replacement downstem.

Double-Check Before Ordering

Before purchasing any replacement accessory, verify:

• Joint size
• Male or female connection
• Downstem length if applicable
• Product compatibility information

Taking a few extra moments to confirm measurements can help avoid ordering the wrong accessory.

Keep Your ROOR® Performing Its Best

Properly fitted accessories help maintain airflow, functionality, and the overall experience collectors expect from premium ROOR® glass.

Understanding how to measure your accessories is one of the simplest ways to ensure your setup continues performing exactly as intended.

Explore More ROOR® Glass

Shop ROOR® Beakers, explore ROOR® Tech, browse ROOR® Accessories, or view all collections.