Adjustable Round Ventilation Diffuser Extract Air Valve Circular Ceiling Mounted Vent Grille MVHR - 100mm 4" dia

Oakcrafts - Antique Cast Iron Double Adjustable Sliding Air Vent - 230mm x 155mm

MAP Aluminium Adjustable Air Vent 9" x 9", Hit & Miss Grille Cover (229mm x 229mm), Gold

Adjustable Round Ventilation Diffuser Extract Air Valve Circular Ceiling Mounted Vent Grille MVHR - 125mm 5" dia

Oakcrafts - Antique Cast Iron Round Tabs Air Vent Extraction Cover - 200mm

MAP Aluminium Adjustable Air Vent 9" x 6", Double Brick Hit & Miss Grille Cover (229mm x 152mm), Gold

Plastic White Louvre Vent 9x3" Adjustable With Fly screen

Oakcrafts - Antique Cast Iron Adjustable Sliding Round Air Vent - 150mm

Oakcrafts - Antique Cast Iron Single Air Brick - 229mm x 76mm

Cast Iron Antique Black Air Brick/Vent 9X9Inch Home Decoration Grill/Vent

Oakcrafts - Antique Cast Iron Round Air Vent Extraction Cover in Satin Black Finish - 200mm

Oakcrafts - Antique Cast Iron Double Air Brick - 230mm x 155mm

Oakcrafts - Antique Cast Iron Double Victorian Style 1883 Air Brick - 240mm x 160mm

Oakcrafts - Antique Cast Iron Adjustable Sliding Single Air Vent - 75mm x 230mm

adjustable air vent with pull cord for 80mm-160mm round duct

Oakcrafts - Antique Cast Iron Square Air Vent Extraction Cover - 140mm

9" x 3" Adjustable Air Vent Satin Anodised Aluminium/Metal Chrome Grille Cover

Adjustable Round Ventilation Diffuser Extract Air Valve Circular Ceiling Mounted Vent Grille MVHR - 200mm 8" dia

9" x 3" Adjustable Vent Brass Anodised Aluminium/Metal Grille Ventilation Cover

Oakcrafts - Antique Cast Iron Single Air Brick in Satin Black Finish - 229mm x 76mm