BRICK VENTS 

WE MAKE 2 SIZES OF TERRACOTTA SUB FLOOR VENT. THE SINGLE BRICK VENTS MEASURE APPROXIMATELY 230 X 76 MM AND THE DOUBLE BRICK VENTS MEASURE APPROXIMATELY 230 X 152 MM. OUR STANDARD SINGLE VENTS COME WITH SQUARE HOLES AND OUR DOUBLES FEATURE ROUND HOLES, SQUARE HOLES OR LOUVRES.