| Class | Class Name | 
|---|---|
| 6 | diving boards of metal | 
| 6 | diving platforms of metal | 
| 6 | dog chains of metal | 
| 6 | domestic doors of metal | 
| 6 | door and window handles of metal | 
| 6 | door and window rails of metal | 
| 6 | door and window rollers | 
| 6 | door bells of metal [non-electric] | 
| 6 | door bells of metal, non-electric | 
| 6 | door bolts of metal | 
| 6 | door buffers of metal | 
| 6 | door casings of metal | 
| 6 | door catches of metal | 
| 6 | door chains of metal | 
| 6 | door closers of metal | 
| 6 | door closers of metal, non-electric | 
| 6 | door fasteners of metal | 
| 6 | door fasteners of metal | 
| 6 | door fittings and locks of metal | 
| 6 | door fittings of metal | 
| 6 | door flaps for use with pet animals; all being made wholly or principally of common metal | 
| 6 | door flaps of metal for use with pet animals | 
| 6 | door frames of metal | 
| 6 | door handle, knobs and pulls, all made of metal | 
| 6 | door handles of metal | 
| 6 | door handles of metal for vehicles | 
| 6 | door hinges of metal | 
| 6 | door knob locks of metal | 
| 6 | door knobs of metal | 
| 6 | door knockers of metal | 
| 6 | door latches of metal | 
| 6 | door latches of metal for vehicles | 
| 6 | door locks of metal | 
| 6 | door openers of metal | 
| 6 | door openers of metal, non-electric | 
| 6 | door panels of metal | 
| 6 | door pulls of metal | 
| 6 | door rails of metal | 
| 6 | door scrapers | 
| 6 | door springs | 
| 6 | door springs of metal, non-electric | 
| 6 | door stops of metal | 
| 6 | doors and door frames of metal | 
| 6 | doors and sliding doors of metal | 
| 6 | doors and walls for safety vaults, all being fireproof or fire-resistant, made of metal | 
| 6 | doors of metal | 
| 6 | doors of metal for buildings | 
| 6 | dowel pins of metal | 
| 6 | drain pipes of metal | 
| 6 | drain traps of metal |