Rytons Hit and Miss Ventilator 9″ x 9″ – Adjustable background ventilator for rooms, small spaces and cupboard ventilator with flush face and low profile. Made from high impact polystyrene, U.V. Stabilised to protect against sun degradation 271mm Long x 247mm High x 5.5mm Deep F30 Accessories/Sundry Items for Brick/Block/Stone Walling: Specification clauses 16, 165 U90 General Ventilation – Domestic: Specification Clauses 36, 38, 61, 360, 380, 505
