Firstly, these are absolutely MANKY and I'm not cleaning them... :

Just removed some old ducting and these were inside. Metal vents that open and close. "Switches" all work, one is a bit stiff on a bigger vent. Big vents approx 13.5 inches by 7.5 inches. Smaller vent APPROX 9 by 7 inches.

*Edit to add I've just found another small vent. The switch/ toggle bit had come out but does fit back in-maybe needs superglue or something? I'm not a vent aficionado :)

Can anyone use these? I'm only keeping for a few days and then they are going to landfill. Please don't ask me to keep them-only ask when you are ready to collect (bored of timewasters now!)

Collection Old Village end of Corby (will be left by door)

Old metal vents (Corby NN18)