Item duplication. 1  Step 1. Have the block you want to duplicate in front of you. ( 2 Examples: Diamond, Gold, or Iron.). 3  Step 2. 4  Now you might want to have a Iron pickaxe or Diamond pickaxe. 5  Step 3. Use you'r pickaxe to quickly mine it.
Heavy Duty/Industrial. A backdraft damper is an isolation damper allowing air in one direction only. Greenheck's HB damper series is designed to prevent back flow at static pressures and velocities up to 20 in. wg and 6400 fpm, respectively.
A damper is a device that deadens, restrains, or depresses. Damper may refer to: 1  Dashpot, a type of hydraulic or mechanical damper, 2  Shock absorber (British or technical use: damper), a mechanical device designed to dissipate kinetic energy. 3  In electronics, a kind of diode, intended to absorb energy peaks, normally generated by inductive circuitry.