| Code(s) | Option | Overall dimensions |
| DS1800-4007 | W 16" D 16" | W 16" D 16" H 4" |
| DS1800-4008 | W 16" D 18" | W 16" D 18" H 4" |
| DS1800-4009 | W 18" D 18" | W 18" D 18" H 4" |
| DS1800-4010 | W 18" D 20" | W 18" D 20" H 4" |
| DS1800-4011 | W 20" D 20" | W 20" D 20" H 4" |
| Code(s) | Option | Overall dimensions |
| DS1800-4007 | W 16" D 16" | W 16" D 16" H 4" |
| DS1800-4008 | W 16" D 18" | W 16" D 18" H 4" |
| DS1800-4009 | W 18" D 18" | W 18" D 18" H 4" |
| DS1800-4010 | W 18" D 20" | W 18" D 20" H 4" |
| DS1800-4011 | W 20" D 20" | W 20" D 20" H 4" |
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