158144 4583 and 16589 formats available hard wearing heavy duty matte white screen 4583 and 16589 have a 300mm extended black drop to ensure optimum viewing motor situated on the right hand side requires electrical installationdimensions1581 1800mm dash w 1800mm x h 1800mm1581 2000mm dash w 2000mm x h 2000mm1581 2400mm dash w 2400mm x h 2400mm1581 2700mm dash w 2700mm x h 2700mm1581 3000mm dash w 3000mm x h 3000mm4583 w 1800mm dash w 1800mm x h 137