Surface mounted British made vents, punched and folded from 0.9mm (20swg) brass. Available in polished brass or Polished and Satin Stainless Steel..
Supplied with matching slotted fixing screws.
Trickle vents are usually used on windows to provide background ventilation to a room or reduce condensation. This internal type can be opened and closed by sliding the button left and right.
Often used in conjunction with External Trickle Vents
but can also work as a stand-alone item.