plural of draining board

plural of cement board

plural of chopping board

plural of Bristol board

(roofing) An insulation board used over closed cell plastic insulation (e.g., polyisocyanurate) to prevent blistering when used in conjunction with hot bituminous membranes.

(roofing) noncombustible board stock material of low thermal conductivity placed between two elements of a roof assembly.

plural of balance board

A device used for recreation, athletic training, circus acts, etc. consisting of a rectangular or circular board on a fulcrum on which board the user attempts to balance.

plural of sandwich board

plural of drawing board