Website: thingiverse
Author: BAD_CAD
Price: Free Download
File format: .Stl 3d printable
Description:
3D printable gas mask filter designed for 40mm NATO threads!-Designed to accept any filter medium available up to 1″ (25.4mm) thick.-Requires one 2.5″ (63.5mm) long, 1/4×20 (M6x1) hex head bolt, stainless steel recommended.-9.425² inches of breathable surface area.-.STP files included for my fellow creatives out there.-