20 Furniture, mirrors, picture frames; goods of wood, cork, reed, cane, wicker, horn, bone, ivory, whalebone, shell, amber, mother-of-pearl, meerschaum, substitutes for all these materials, or of plastics, namely, beds, beds for use by mobility-impaired persons, non-metallic fittings for beds, hospital beds, spring mattresses, hydrostatic water beds not for medical use, portable, transportable and fitted beds, bases for water beds not for medical use, furniture incorporating beds and furniture for conversion into beds, bases and headboards for beds, beds incorporating divan bases, water beds, slatted bed frames for beds, rods for beds, beds of wood; mattresses, foam and spring mattresses, air mattresses not for medical use, mattress cushions, mattress bases, mattresses for beach use, fireproof mattresses, foam mattresses for camping; mattress covers, namely, mattress toppers