Blast Hatch with Collar
The Blast Hatch with Collar is designed for horizontal installation
Spring loaded lift assistance cylinders for opening
Spring loaded shock absorbers to keep door frame from closing uncontrollably
3/8 inch thick steel door leaf
3 inch square tubing for reinforcement
3/4 inch steel plate internal hinges
Removable hydraulic jack, this is extremely useful in the event that debris falls on your hatch opening while you are inside.
Removable lock hasp with NBC seal for self rescue
2.5” thick concrete filled lid
36” inside diameter of collar
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