The chambers of the Senate and House of Representatives are large internal spaces, with ceilings considerably higher than that of King's Hall. Both chambers are the same size, despite the requirement of section 24 of the Australian Constitution that the House of Representatives should have, as nearly as practicable, twice the number of members as the Senate. Both are lined with timber panelling, again representative of Murdoch's simplified classical style, with furnishings in a similar style. The timber used in the wall panelling, the desks, seats and tables is all Australian black bean wood and Tasmanian blackwood. The hand-woven carpets in each chamber have a pattern of eucalyptus leaves and wattle blossom.