Section 7(f) in The Prevention Of Cruelty To Animals (Slaughter House) Rules, 2001
(f)Window Ledges .-Window ledges shall be sloped 45 degrees to promote sanitation and to avoid damage to glass in windows from impact of hand trucks and similar equipment, the windowsills shall be 1200 mm above the floor level with proper ventilation through mechanical venting or through working vents shall be provided in the roof structure;
