Jim Black Escape Hatch 18.5" x 18.5" Diving Gear The easy-to-use Integrated Buckles (Cressi

The easy-to-use Integrated Buckles (Cressi patented technology) are integrated with the frame with a swivel system for quickly strap length adjustment

Sensors disabled for snorkeling/swimming activities

- Removable exhaust tee without tools

Suitable for Scuba Diving & Snorkeling

Jim Black Escape Hatch 18.5" x 18.5" Diving Gear The easy-to-use Integrated Buckles (CressiUV Stable Plastic Resin Chemical Resistant 2" Hollow Core Seal with . 500 Crush for Water Resistant Product 1 4" Temper Glass for Strength, Clarity, and Chemical Resistance Matching Trim Ring. External Handles for Emergency Escape. Outside Dimensions : 21" x 21". Inside Dimensions : 17. 75" x 17. 75". Cutout Dimensions : 18. 5" x 18. 5".