Q: Is this hatch truly waterproof?
It seems that there is no text provided for translation. Please provide the text you would like me to translate. Yes—IP67-rated with dual O-ring seals to prevent leaks.

Q: Can it support foot traffic?
It seems that there is no text provided for translation. Please provide the text you would like to have translated into English. Yes—reinforced models support up to 250 lbs (check size specs).

Q: Does it come with a lock?
It seems that there is no text provided for translation. Please provide the text you would like to have translated into English. Optional—choose between key lock or twist-latch security.

Q: What sizes are available?
It seems that there is no text provided for translation. Please provide the text you would like me to translate. 8", 10", 12", 14", 16" diameters (custom sizes available).

Q: Saltwater-resistant?
It seems that you haven't provided any text to translate. Please provide the text you'd like me to translate, and I'll be happy to assist you! Yes—316不锈钢硬件和海洋级聚合物。