"Timloc 1207W 9x3 Plastic Internal Louvre Grille Vent White:Plastic internal grille and louvre vents designed to cover the inner opening of a cavity sleeve and provide an aesthetically pleasing appearance while sustaining airflow and reducing drafts. All grilles
"Timloc 1209W 9x6 Plastic Internal Hit & Miss Grille Vent White:Plastic internal grille and louvre vents designed to cover the inner opening of a cavity sleeve and provide an aesthetically pleasing appearance while sustaining airflow and reducing drafts. All grilles
"Plastic internal grille and louvre vents designed to cover the inner opening of a cavity sleeve and provide an aesthetically pleasing appearance while sustaining airflow and reducing drafts. All grilles
"The multi-function 1143 cavity wall weep designed for cavity ventilation and reliable discharge of water from inside cavity walls. This could be over external lintels or wherever a cavity tray system is installed.