150 x 250 +40mm lip (6 x 10") Perforated P.8 (8 holes per square inch)
150 x 350 +40mm lip (6 x 14") Perforated P.8 (8 holes per square inch)
200 x 250 +40mm lip (8 x 10") Perforated P.8 (8 holes per square inch)
250 x 300 +40mm lip (10 x 12") Perforated P.8 (8 holes per square inch)