| VALDIS TENSION ADJUSTABLE BACKREST - 16" x 18" (406 x 457 MM) | +G094D525016180P | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 16" x 20" (406 x 508 MM) | +G094D525016200I | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 17" x 16" (432 x 406 MM) | +G094D525017160O | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 17" x 18" (432 x 457 MM) | +G094D525017180Q | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 17" x 20" (432 x 508 MM) | +G094D525017200J | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 18" x 16" (457 x 406 MM) | +G094D525018160P | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 18" x 18" (457 x 457 MM) | +G094D525018180R | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 18" x 20" (457 x 508 MM) | +G094D525018200K | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 19" x 16" (483 x 406 MM) | +G094D525019160Q | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 19" x 18" (483 x 457 MM) | +G094D525019180S | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 19" x 20" (483 x 508 MM) | +G094D525019200L | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 20" x 16" (508 x 406 MM) | +G094D525020160I | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 20" x 18" (508 x 457 MM) | +G094D525020180K | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 20" x 20" (508 x 508 MM) | +G094D525020200D | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 21" x 16" (533 x 406 MM) | +G094D525021160J | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 21" x 18" (533 x 457 MM) | +G094D525021180L | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 21" x 20" (533 x 508 MM) | +G094D525021200E | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 21" x 22" (533 x 559 MM) | +G094D525021220G | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 21" x 24" (533 x 610 MM) | +G094D525021240I | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 22" x 16" (559 x 406 MM) | +G094D525022160K | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 22" x 18" (559 x 457 MM) | +G094D525022180M | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 22" x 20" (559 x 508 MM) | +G094D525022200F | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 22" x 22" (559 x 559 MM) | +G094D525022220H | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 22" x 24" (559 x 610 MM) | +G094D525022240J | Class I | |
| VALDIS TENSION ADJUSTABLE BACKREST - 23" x 16" (584 x 406 MM) | +G094D525023160L | Class I | |
