Blindspace® TrackTrim® and TrackTrim Click
A plaster-in profile the width of the drapery track, with an end set molded for the exact motor and return end of the system going in. The track disappears into the ceiling; the drapery hangs from a slot. Profiles, end sets, maximum runs and curves below, for the three motorized tracks we install and for manual tracks.
A slot the width of the track, and an end set made for the motor
TrackTrim is Blindspace's plaster-in profile for drapery tracks: an aluminum channel 90 mm wide and 30 mm deep, fixed into the ceiling framing every 200 mm while the building is open, with skim-coat flanges that let the plaster run up to a chamfered edge. The drapery track is fixed up through the profile, so there is no bracket to see, and the slot is painted with the ceiling.
What makes it different from a drywall slot is the end set. Each motorized track has a motor housing at one end and a return at the other, and Blindspace molds an end set to each: TTLMB1F and TTLRB1F for the Lutron Sivoia track, TTSMB1F and TTSRB1F for the Somfy Glydea, TTCMB1F and TTCRB1F for the Crestron track, flat ends for manual tracks. The slot ends exactly where the hardware ends. TrackTrim Click is the same profile with clips instead of screws: the track clicks in and comes out with a removal tool.
Straight runs are drawn to 30 feet on a single Lutron or Crestron motor and 46 feet on a Glydea, longer with two motors; dual tracks sit 140 or 180 mm apart; corners and curves are standard sections.

TrackTrim at a glance
The three motorized tracks we install, and manual
Part numbers from the Blindspace product sheets; maximum runs from the Blindspace drawings. Blindspace also makes end sets for Silent Gliss 5100 and 5600, QMotion, Coulisse, Goelst, Erfal and Trietex tracks.
| Track system | Motor end | Return end | Corner and straight connectors | Bracket / Click clip | Max run, one motor | Two motors |
|---|---|---|---|---|---|---|
| Lutron Sivoia QS drapery track | TTLMB1F, 137 mm | TTLRB1F, 122 mm | TTLCRB1F corner, TTLSRB1F straight | TTL1 / TTCL1 | 9,144 mm (30 ft) | - |
| Somfy Glydea | TTSMB1F, 137 mm; TTSIMB1F inverted, 137 mm | TTSRB1F, 56 mm | TTSCRB1F corner, TTSSRB1F straight | TTS1 / TTCS1 | 14,000 mm (46 ft) | 21,000 mm (69 ft) |
| Crestron drapery track | TTCMB1F, 154 mm | TTCRB1F, 108 mm | - | TTC1 / TTC2 | 9,144 mm (30 ft) | 18,288 mm (60 ft) |
| Manual track | TTFE1S flat end with flange, TTFE1N without; FE35 for the flangeless profile | Corner and curved drawings as for the motorized tracks | - | - | - | |
The run length is Blindspace's drawn limit for the profile and end sets. The drapery track's own maximum, the motor's load rating and the fabric weight are checked separately; see motorized curtain tracks.
Straight, dual, corner and combined configurations
The TrackTrim drawings for Lutron, Somfy, Crestron and manual tracks, including the dual spacings, the corners with one-piece returns, the curved sections and the S Series boxes drawn with a TrackTrim profile alongside.
| Box | Shade or track system | Configuration | Max width | Cover width |
|---|---|---|---|---|
| S100x100+TT Tracktrim | Lutron R64 - roller shades with Lutron TrackTrim Lutron | Roller shade, roller + drapery track | ~96 in (2,438 mm) | 65 mm |
| TT Tracktrim | Corner with recessed Lutron drapery track - one-piece return ends Lutron | Drapery track, corner windows | ~360 in (9,144 mm) | - |
| TT Tracktrim | Corner with recessed Lutron drapery tracks Lutron | Drapery track, corner windows | ~360 in (9,144 mm) | - |
| TT Tracktrim | Corner with recessed Lutron curved drapery tracks Lutron | Drapery track, corner windows | ~360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim Click for Lutron Sivoia drapery track Lutron | Drapery track | ~360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim for Lutron Sivoia - straight return end connector Lutron | Drapery track | ~360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim for Lutron dual drapery tracks 140 mm spacingPopular Lutron | Drapery track, tracks side-by-side, corner windows | ~360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim for Lutron dual drapery tracks 5.51 in spacing Lutron | Drapery track, tracks side-by-side, corner windows | 360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from LutronPopular Lutron | Drapery track | 360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Crestron Crestron | Drapery track | 360 in (9,144 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Crestron two motors ends Crestron | Drapery track | 720 in (18,288 mm) | - |
| TT Tracktrim | Corner with recessed Somfy drapery track - one-piece return ends Somfy | Drapery track, corner windows | ~551 in (14,000 mm) | - |
| TT Tracktrim | Corner with recessed Somfy drapery tracks Somfy | Drapery track, corner windows | ~551 in (14,000 mm) | - |
| TT Tracktrim | Corner with recessed Somfy curved drapery tracks Somfy | Drapery track, corner windows | ~551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim Click for Somfy Glydea drapery track Somfy | Drapery track | ~551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim for Somfy Glydea - straight return end connector Somfy | Drapery track | ~551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim for Somfy dual drapery tracks 140 mm spacing Somfy | Drapery track, tracks side-by-side, corner windows | ~551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim for Somfy dual drapery tracks 180 mm spacing Somfy | Drapery track, tracks side-by-side, corner windows | ~551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Somfy Glydea inverted motor Somfy | Drapery track | 551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Somfy Glydea motor and return endsPopular Somfy | Drapery track | 551 in (14,000 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Somfy Glydea two inverted motor ends Somfy | Drapery track | 827 in (21,000 mm) | - |
| TT Tracktrim | TrackTrim to recess drapery tracks from Somfy Glydea two motor ends Somfy | Drapery track | 827 in (21,000 mm) | - |
| TT Tracktrim | TrackTrim for Somfy dual drapery tracks 5.51 in spacingPopular Somfy | Drapery track, tracks side-by-side, corner windows | 551 in (13,995 mm) | - |
| TT Tracktrim | TrackTrim for Somfy dual drapery tracks 7.09 in spacing Somfy | Drapery track, tracks side-by-side, corner windows | 551 in (13,995 mm) | - |
| TT Tracktrim | TrackTrim recessed curve section 250mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 290mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 300mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 330mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 365mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 440mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 480mm radius generic | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 508mm radius generic | Drapery track, corner windows | - | - |
| S100x100+TT Tracktrim | Standard roller shade with TrackTrimPopular generic roller, any brand | Roller shade, roller + drapery track | ~110 in (2,800 mm) | 65 mm |
| S100x100+TT S Series | Corner with butted boxes and butted drapery tracks generic roller, any brand | Drapery track, roller + drapery track, corner windows | ~110 in (2,800 mm) | - |
| S100x100+TT S Series | Corner with butted boxes and curved drapery tracks generic roller, any brand | Drapery track, roller + drapery track, corner windows | ~110 in (2,800 mm) | - |
| S100x100+TT S Series | Corner with mitered boxes and butted drapery tracks generic roller, any brand | Drapery track, roller + drapery track, corner windows | ~110 in (2,800 mm) | - |
| S100x100+TT S Series | Corner with mitered boxes and curved drapery tracks generic roller, any brand | Drapery track, roller + drapery track, corner windows | ~110 in (2,800 mm) | - |
| S100x100+TT S Series | Corner with mitered boxes and curved drapery tracks 300mm and 440mm generic roller, any brand | Drapery track, roller + drapery track, corner windows | ~110 in (2,800 mm) | - |
| S130x130+TT Tracktrim | Large roller shade with TrackTrim generic roller, any brand | Roller shade, roller + drapery track | ~157 in (4,000 mm) | 95 mm |
| TT Tracktrim | Corner with recessed manual drapery track - one-piece return ends generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | Corner with recessed manual drapery tracks generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | Corner with recessed manual curved drapery tracks generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 11.43inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 11.82inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 13.00inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 14.38inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 17.34inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 18.91inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 20.00inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim recessed curve section 9.85inch radius generic roller, any brand | Drapery track, corner windows | - | - |
| TT Tracktrim | TrackTrim for manual drapery trackPopular generic roller, any brand | Drapery track | - | - |
Max width here is the drawn track length. Dual spacings: 140 mm (5.51 in) on the Lutron and Somfy drawings, 180 mm (7.09 in) as the wider Somfy option. Curve radii: 250 to 508 mm (9.85 to 20 in).
What we check before the profile is ordered
Stack width against slot length
The drapery stacks below the ceiling, but the return end must clear the plaster. We size the return bracket from the system's own return and check the stack against the wall.
Motor end and power
The motor end set is at the end where power arrives: 120 V or 24 V for Glydea, the QS link for Sivoia, Cresnet for Crestron. The drawing fixes which end.
Dual spacing
A sheer and a blackout on two profiles need 140 mm between tracks on the Lutron and Somfy drawings, 180 mm on the wider Somfy layout; the corner and curve parts are matched to the spacing.
Curves and corners
A bay gets chained 22.5-degree sections at a radius the fabric can round; a corner gets a one-piece return or a curve, decided from the drapery's fullness.
Click or screw
TrackTrim Click goes in where the track may come out again for service; the clip positions are set from the stack area on the drawing.
The hairline
Fixing every 200 mm, splice pins at every joint, flanges feathered into the skim coat: the profile edge is the only line in the ceiling, and it is straight.
TrackTrim: frequently asked
What is TrackTrim?
A plaster-in aluminum profile, 90 mm wide and 30 mm deep, that forms a slot in the ceiling the width of a drapery track. The track is fixed up through the profile, so there are no visible brackets, and an end set molded for the specific motor and return end closes each end of the slot. After skim coat and paint, the ceiling shows a slot the color of the ceiling and the drapery hangs from it.
What is the difference between TrackTrim and TrackTrim Click?
Fixing. TrackTrim (TT1F with a screw channel, TT2F for screw-through fixing) takes the drapery track on screws through the profile. TrackTrim Click (TTC1F) takes clips, TTCL1 for Lutron and TTCS1 for Somfy, placed every 500 mm and every 100 mm where the drapery stacks, and the track clicks in without drilling; a removal tool takes it out again. Same end sets, same curves, same 90 x 30 mm section.
Which end sets fit a Lutron Sivoia drapery track?
TTLMB1F at the motor end (137 mm long) and TTLRB1F at the return end (122 mm), with TTLSRB1F as a straight return connector and TTLCRB1F as a one-piece corner for butt-jointed return ends. The fixing bracket is TTL1, or the TTCL1 clip on TrackTrim Click. Blindspace draws the Lutron track to 9,144 mm (30 feet) on one motor.
Which end sets fit a Somfy Glydea track?
TTSMB1F at the motor end, TTSIMB1F for an inverted motor, TTSRB1F at the return, TTSSRB1F as the straight return connector and TTSCRB1F for the one-piece corner, with bracket TTS1 or clip TTCS1. Blindspace draws the Glydea track to 14,000 mm (46 feet) on one motor and 21,000 mm (69 feet) with two motors.
Which end sets fit a Crestron track?
TTCMB1F at the motor end (154 mm long) and TTCRB1F at the return (108 mm), brackets TTC1 and TTC2. Blindspace draws the Crestron track to 9,144 mm (30 feet) on one motor and 18,288 mm (60 feet) with two motors.
How far apart are dual tracks?
140 mm (5.51 inches) between a sheer and a blackout track on the Lutron and Somfy drawings, and 180 mm (7.09 inches) as the wider Somfy option. The two profiles are plastered in as one slot pair, and the corner and curved sections are drawn for both spacings.
Can a recessed track turn a corner or follow a curve?
Both. The one-piece corner return ends join two straight runs at a butt joint, and the curved sections (22.5 degrees each, radii from 250 to 508 mm, 9.85 to 20 inches) are chained for bay windows and curved walls. Blindspace draws the corners for Lutron, Somfy and manual tracks, with butted and curved track options.
Does the drapery stack need more than the slot?
The slot carries the track; the stack hangs below the ceiling in the room. Where a drapery must disappear behind a wall return, the return end set is sized to the system's own return bracket so the fabric clears the plaster. We check the stack width against the slot length before the profile is ordered.
Draperies that hang from the ceiling itself
Tell us the wall, the track and the fabric. We send the TrackTrim drawing with the right end sets and a quote for the profile, the track, the drapery and the installation. One free hour with our team routinely saves owners thousands in avoidable mistakes.