Catch, handle, lock to make storage box more airtight for filament. Link to boxes included. Stack-a-box

Catch,  to make  storage box more airtight for filament.  Use some draught excluder tape to help air-proof the lid.

I used PETG as it has a little more flex, but I'm sure PLA would work.

 No support is needed.

These are the boxes I used, they take about 7 x 1kg filament rolls.

 https://www.amazon.co.uk/dp/B0CVBKXG5C?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1