Total size of hatch/door 24.5x9. cutout hole size 22.5x7.5 mounted open hole access size 21in x 6in.
$5 for each other boat parts- Trailer replacement rollers of sorts.
the 2 knobs are lift twist to open, twist push down flat to securely close. you add stainless or black screws to screw to floor or side. Good for boat or camper to make an access to under floor or side opening. made of plastic material- waterproof.