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PCE
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CPC Subgroup
E04B 9/32

Translucent ceilings, i.e. permitting both the transmission and diffusion of light ( E04B9/34 takes precedence; lighting F21)

Full Title

Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation (ceilings used as forms for making floors E04B5/00; coverings or linings for ceilings E04F13/00) > Translucent ceilings, i.e. permitting both the transmission and diffusion of light ( E04B9/34 takes precedence; lighting F21)