 US-UK STANDARDS (System of Imperial Units) |
 EUROPEAN STANDARDS (International System of Units) |
|
|---|---|---|
| DIMENSION (+/-2%) | 21 inch X 21 inch | 53,5 cm x 53,5 cm |
| COVERAGE AREA | 3,10 ft2/panel | 0,29 m2/panel |
| PANEL THICKNESS / PATTERN DEPTH | 1,2 inch / 0,20 inch | 30 mm / 5 mm |