Light Duty Floor Grilles|Reduce the risk of equipment failure due to overheating by providing cool air exactly where required, eliminating unwanted high temperatures or heat build up.
Heavy duty floor grilles from RCM are long lasting
Decorative wall/floor air intake/exhaust grille - aluminium cast | Alnor
HDFG-L Heavy Duty Linear Floor Grilles by Waterloo Air Products plc
18 X 18 Cast Aluminum Floor Register Vent Covers - Etsy UK