Halv Svea (half Svea) (Draft)

Half Svea (Halv Svea): A shallow Swedish frame/box size—frame 300 × 146 mm—used mainly as honey supers in Svea-based systems (≈353 cm² comb area per frame). Same 300 mm frame width as full Svea (300 × 300 mm), but half height for lighter lifts.