Before you start
Check pre-drilled inventory
Check eight labeled pre-drilled panels: two sides 18 x 293.5 x 1800, three shelves 864 x 293.5 x 24, top/bottom 864 x 293.5 x 18, and back 900 x 6.5 x 1800 mm. Count 20 SPAX 4 x 40 and 15 SPAX 3.5 x 20 T20 screws. For lighting, check four 845 mm Domus Line AT6 ULTRA lights and accessories.
✓All labeled parts and screw counts match.
TipThe floor-contact bottom has no light or cable route.
Confirm structural core
Confirm WISA-Birch standard cross-laminated core UPM007CPR, not UPM008CPR. Check minimum thicknesses: shelves 22.9 mm, top/bottom and sides 17.1 mm, back 6.1 mm. Keep the oak surface finish separate from structural strength.
✓Core type and minimum thicknesses are confirmed.
TipShelf face grain runs along the 864 mm span.
Check firstDelivered layup, thickness, and finishing process must be verified before manufacture.
Review shelf load limits
Treat each shelf as planned for 30 kg of uniformly distributed books in a dry interior. Do not assume equal screw sharing, back support, or clamped ends. Keep each shelf end group to two screws as designed.
✓All shelves remain unloaded.
TipEffective shelf depth after machining is 260 mm.
Check firstConnection tests, racking evidence, and site restraint evidence are still required; keep shelves unloaded until approved.
Build it
Support the left side
With a helper, lay the left side on a padded bench with its inside face upward. Point all marked front edges the same way. Arrange blocks and clamps to hold perpendicular panels while outside screw entries stay accessible.
✓The left side is stable and accessible.
TipPad the bench to protect the oak veneer.
Fit bottom to side
Bring the labeled bottom edge to the matching pre-drilled holes in the left side. Keep front edges flush; support the free end and clamp square. Drive two SPAX 4 x 40 T20 screws slowly into the conical seats, leaving them loose for squaring.
- Bottom
- 2 screws · 4 × 40 mm
✓The bottom is clamped flush and square.
TipKeep 100 x 30 mm straight driver access.
Fit lower shelf to side
Bring the labeled lower shelf edge to the matching pre-drilled holes in the left side. Keep front edges flush; support the free end and clamp square. Drive two SPAX 4 x 40 T20 screws slowly into the conical seats, leaving them loose for squaring.
- Lower fixed shelf
- 2 screws · 4 × 40 mm
✓The lower shelf is clamped flush and square.
TipKeep 100 x 30 mm straight driver access.
Fit middle shelf to side
Bring the labeled middle shelf edge to the matching pre-drilled holes in the left side. Keep front edges flush; support the free end and clamp square. Drive two SPAX 4 x 40 T20 screws slowly into the conical seats, leaving them loose for squaring.
- Middle fixed shelf
- 2 screws · 4 × 40 mm
✓The middle shelf is clamped flush and square.
TipKeep 100 x 30 mm straight driver access.
Fit upper shelf to side
Bring the labeled upper shelf edge to the matching pre-drilled holes in the left side. Keep front edges flush; support the free end and clamp square. Drive two SPAX 4 x 40 T20 screws slowly into the conical seats, leaving them loose for squaring.
- Upper fixed shelf
- 2 screws · 4 × 40 mm
✓The upper shelf is clamped flush and square.
TipKeep 100 x 30 mm straight driver access.
Fit top to side
Bring the labeled top edge to the matching pre-drilled holes in the left side. Keep front edges flush; support the free end and clamp square. Drive two SPAX 4 x 40 T20 screws slowly into the conical seats, leaving them loose for squaring.
✓The top is clamped flush and square.
TipKeep 100 x 30 mm straight driver access.
Fit the right side
With a helper, lower the right side onto all five free panel ends. Match every pre-drilled pair and clamp with front edges flush. Drive ten SPAX 4 x 40 T20 screws from the outside right, working bottom to top and leaving them loose.
- Right side
- 10 screws · 4 × 40 mm
- Two people
✓All five panels meet the right side.
TipKeep support in place throughout this step.
Square the supported carcass
With a helper, place the supported carcass front-down on a padded flat surface. Compare diagonals, align the panel fronts, and confirm four 423 mm clear bays. Adjust clamps, then seat all 20 SPAX 4 x 40 heads flush in the prepared conical seats.
✓Diagonals match and all bays measure 423 mm.
TipStop if any head stands proud or sinks below veneer.
Locate the back
Lay the back on the upward rear edges with all perimeter edges flush. Match the pre-drilled holes to their pilots. Drive four SPAX 3.5 x 20 T20 screws from the rear at the uppermost and lowermost side-edge stations, leaving them lightly snug.
- Full back
- 4 screws · 3.5 × 20 mm
✓The back is flush and diagonals are rechecked.
TipPreserve 100 x 30 mm rear driver space.
Complete back connections
Drive the remaining eleven SPAX 3.5 x 20 T20 screws from the rear into pre-drilled pilots: four along side edges, four into top/bottom, and three into shelf rear edges. Work evenly while checking square. Finish all 15 heads flush in the conical seats.
✓All 15 back screws sit flush.
TipStop before crushing the 6.5 mm back.
Under-shelf lightingOptional
Check lower light ends
If you are adding the lighting, check the lower shelf width leaves 5.5 mm at the left end and 13.5 mm at the right end. Use one 845 mm free-cut light run.
✓Both end allowances are present.
TipThe right allowance includes the feed connector.
Check firstEnd fit must be confirmed before manufacture.
Fit lower shelf lighting
If you are adding the lighting, isolate power and support the lower shelf underside up. Check the 845 x 6 mm rounded recess is 6 mm deep. Fit the light and end fittings, protect the disconnected lead, and inspect the labeled 8 mm back passage.
✓The lead is protected and disconnected.
TipDo not drill or route during assembly.
Check middle light ends
If you are adding the lighting, check the middle shelf width leaves 5.5 mm at the left end and 13.5 mm at the right end. Use one 845 mm free-cut light run.
✓Both end allowances are present.
TipThe right allowance includes the feed connector.
Check firstEnd fit must be confirmed before manufacture.
Fit middle shelf lighting
If you are adding the lighting, isolate power and support the middle shelf underside up. Check the 845 x 6 mm rounded recess is 6 mm deep. Fit the light and end fittings, protect the disconnected lead, and inspect the labeled 8 mm back passage.
✓The lead is protected and disconnected.
TipDo not drill or route during assembly.
Check upper light ends
If you are adding the lighting, check the upper shelf width leaves 5.5 mm at the left end and 13.5 mm at the right end. Use one 845 mm free-cut light run.
✓Both end allowances are present.
TipThe right allowance includes the feed connector.
Check firstEnd fit must be confirmed before manufacture.
Fit upper shelf lighting
If you are adding the lighting, isolate power and support the upper shelf underside up. Check the 845 x 6 mm rounded recess is 6 mm deep. Fit the light and end fittings, protect the disconnected lead, and inspect the labeled 8 mm back passage.
✓The lead is protected and disconnected.
TipDo not drill or route during assembly.
Check top light ends
If you are adding the lighting, check the top width leaves 5.5 mm at the left end and 13.5 mm at the right end. Use one 845 mm free-cut light run.
✓Both end allowances are present.
TipThe right allowance includes the feed connector.
Check firstEnd fit must be confirmed before manufacture.
Fit top lighting
If you are adding the lighting, isolate power and support the top underside up. Check the 845 x 6 mm rounded recess is 6 mm deep. Fit the light and end fittings, protect the disconnected lead, and inspect the labeled 8 mm back passage.
✓The lead is protected and disconnected.
TipDo not drill or route during assembly.
Thread lower rear lead
If you are adding the lighting, keep power isolated and the carcass supported before locating the back. Route the lower shelf lead rearward beneath its shelf and through its prepared 8 mm back hole from inside to outside. Pass one connector only.
✓The lower lead exits behind the back.
TipKeep the lead clear of back joints and screws.
Thread middle rear lead
If you are adding the lighting, keep power isolated and the carcass supported before locating the back. Route the middle shelf lead rearward beneath its shelf and through its prepared 8 mm back hole from inside to outside. Pass one connector only.
✓The middle lead exits behind the back.
TipKeep the lead clear of back joints and screws.
Thread upper rear lead
If you are adding the lighting, keep power isolated and the carcass supported before locating the back. Route the upper shelf lead rearward beneath its shelf and through its prepared 8 mm back hole from inside to outside. Pass one connector only.
✓The upper lead exits behind the back.
TipKeep the lead clear of back joints and screws.
Thread top rear lead
If you are adding the lighting, keep power isolated and the carcass supported before locating the back. Route the top lead rearward beneath the top and through its prepared 8 mm back hole from inside to outside. Pass one connector only.
✓The top lead exits behind the back.
TipKeep the lead clear of back joints and screws.
Retain rear service branches
If you are adding the lighting, retain all four leads outside the back before wall restraint. At each exit, turn the lead to the right, then upward beside the right side. Keep individual labels, bends, wall clearance, retention, and edge protection.
✓All four leads remain accessible behind the unit.
TipDo not route any lead below the bottom.
Keep supply accessible
If you are adding the lighting, position one ventilated supply/DIN enclosure beside the upper right side with front access after wall restraint. Keep four removable branch connectors and slack loops reachable without moving the unit. Confirm clearances, enclosure fixings, mains isolation, and ventilation.
✓Supply access remains reachable from the front.
TipKeep slack loops removable for service.
Confirm power capacity
If you are adding the lighting, calculate four 845 mm runs at 10 W/m as 33.8 W total, or 1.408 A at 24 V. Provide at least 42.25 W available after derating, giving 8.45 W margin above load.
✓The selected supply exceeds 42.25 W available.
Check firstA qualified installer must select the supply and confirm headroom, Shelly mode/current, wire sizing, and branch protection.
Connect parallel branches
If you are adding the lighting, after wall restraint, isolate power and connect all four labeled 24 V branches in parallel through accessible terminals to the shared controller/supply. Confirm polarity, local control, and mains separation. Test each light, local on/off, and isolation.
✓Each light switches on and isolates correctly.
TipKeep branch connectors accessible after testing.
Check firstElectrical approval is required before connection; Home Assistant connection is not included.
Fix it and check it
Resolve wall restraint
Keep the unit supported. Install rated anti-tip hardware to the wall substrate and structural attachment points, following the approved system instructions. With a helper, position the unit upright only under controlled support; do not leave it freestanding or load it before restraint is confirmed.
✓The unit is restrained before any loading.
TipThe 6.5 mm back is not an anchor support.
Check firstWall substrate, hardware, attachment points, and installation details are unresolved; have a qualified installer resolve them.
Complete final inspection
Confirm wall restraint, level, square, all 35 seated fixings, flush panel contacts, and no splits or movement. Check all four lights and service loops if installed. Treat the three 24 mm shelves as screened only for 30 kg uniformly distributed books each.
✓Nothing moves, splits, or stands proud.
TipUse a straightedge to confirm fixing heads are flush.
Check firstThe 30 kg shelf screen does not establish whole-furniture capacity; keep unloaded until all approvals are complete.