If you want a made-from-scratch, custom-tailored Savile Row suit, prepare to spend at least $5,000 and wait 10-12 weeks. If you want a made-from-scratch Permatron air filter prototype [...]

Q. Which of these contaminants can not be stopped by a PreVent Air Intake Filter? Dust Construction debris Seeds Leaves Pollen Insects Nesting birds Industrial debris Trash Put down your pencil [...]