4 Floor Heat Register Louver Vent Victorian Cast 4" x 8" Duct | Renovator's Supply

Control, Lock andamp; SAVE on energy bills Airflow Regulator andamp; Locking Mechanism Overall 5 1/2 x 10 Feature a durable machined brass spindle? Include two (2) solid cast brass knobs? Are sold in pairs? Have a great low price per pair? Can be used separately with a dummy spindle? Exclusive andlt;bandgt;Infinitely adjustableandlt;/bandgt; louver assembly Exclusive andlt;bandgt;Locking mechanismandlt;/bandgt; keeps vents in place Control every room's airflow - andlt;bandgt;saving you moneyandlt;/bandgt; Maintenance-FREE, andlt;bandgt;rustproof cast aluminumandlt;/bandgt; andlt;bandgt;Baked-on powder coatingandlt;/bandgt; - luxurious black finish