2-Way Horizontal Masking TrapDoor ElectriScreen (ABT Horizontal ES EM) for Home Cinema

Stewart Filmscreen’s trapdoor systems each feature a motorized, aluminum trapdoor which closes when the screen is not in use. For flush-mount installations, the systems also each feature a builder-friendly, hidden alignment ring around the box perimeter.


  • Variable aspect ratio - constant height/variable width
  • Electronically controlled screen, trapdoor, and horizontal masking panel
  • Custom roller tube with sound-dampening, insulated screen drive
  • Aluminum screen housing with white painted finish
  • Available with all Stewart's flexible materials (with the exception of Silver 3D)
  • Tab-Guy™ tensioning system ensures smooth surface and eliminates edge-curl
  • Black drop/overscan border above image
  • Matte black overscan borders on sides and bottom
  • Recessed ceiling mount with adjustable drywall flanges
  • (1) 3-position low voltage wall switch - screen control
  • (1) 3-position low voltage wall switch - horizontal panel control
  • (1) 3-position low voltage wall switch - trapdoor control

Available Options (available by factory quotation):

  • Custom sizes and aspect ratios 
  • Rear projection models
  • Acoustic perforation on front projection models
  • Acoustically transparent masking panels
  • Custom control options
  • BRIC system recommended for maximum masking flexibility and control
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Like all Stewart Filmscreen products, the ABT Horizontal ElectriScreen ElectriMasks are engineered with totally seamless screen materials (this includes masking borders). To prevent edge-curl and insure a flat image, Stewart utilizes our exclusive Tab-Guy™ tensioning system. Stewart’s motorized roller system provides a quiet, reliable screen operation. The screen retracts into an obscure trapdoor that mounts flush, and can be painted to blend perfectly, with the ceiling surface, efficiently hiding its existence. Stewart Filmscreen’s ABT Horizontal ES EM is designed to provide the flexibility of a multiple aspect ratio ElectriMask system with a roll-up screen. Aspect ratios from standard NTSC 1.33:1 up to Cinemascope 2.35:1 can be achieved.

Screen Material Quick Reference Guide

Front Projection

Material Name Gain Half Gain Color Description
Phantom™ HALR™ 1.0 30 Degrees Black

A flexible, front projection, high ambient light rejection, screen material, Phantom HALR offers excellent ambient light rejection capabilities that deliver an exceptional entertainment experience, day or night.

StudioTek™ 100 1.0 Full Lambertian Diffuser White

StudioTek 100 is a flexible, front projection, matte-white screen formulated to meet the strictest color and white field uniformity standards. 

StudioTek™ 130 G3 1.3 80 Degrees White

StudioTek 130 G3 is a flexible, front projection, screen material that is formulated to provide optimized white field uniformity unmatched by competing gain screens. 

FireHawk® 1.1 35 Degrees Gray

FireHawk, in its fourth generation, is a flexible, front projection, screen surface engineered for use with today’s high-powered projection technology in applications involving the presence of ambient light. 

GrayHawk® 0.9 77 Degrees Gray

GrayHawk is an innovative, front projection, screen surface designed to maximize the performance of today’s 1080p technology. The fourth generation GrayHawk, ultra-fine, optical coating improves uniformity for consistent brightness across the entire screen. 

GrayMatte 70 0.7 Full Lambertian Diffuser Gray

GrayMatte 70 is a flexible, front projection, screen material formulated for use in front projection, edge blending applications.

Rear Projection

Material Name Gain Half Gain Color Description
AeroView 100 1.0 63 Degrees Off-White

AeroView 100 is a flexible, rear projection, screen material formulated to provide excellent white field uniformity. The AeroView 100 performs superbly in environments where ambient light can be controlled and is appropriate for wider viewing angles.

FilmScreen 100 1.0 39 Degrees Gray

FilmScreen 100 is a flexible, rear projection, screen material formulated with a neutral density gray tint for enhanced contrast. FilmScreen 100 offers a very wide viewing angle for a contrast enhanced material and works well in short throw projection light paths.

LumiFlex 130 1.3 42 Degrees Off-White

LumiFlex 130 is a flexible, rear projection, screen material formulated at a higher gain and is appropriate for larger screen sizes or low output projectors. LumiFlex 130 offers excellent white field uniformity, has a gain factor 30% above unity, and delivers a lot of energy.

Standard Controls

Control Power Options Description
BRIC 115V / 220V

The Binary Reciprocal Intelligent Controller, or BRIC, is the industry's first microprocessor-based control device.  It is designed for precision setting of multiple masking presets, elimination of multiple controllers for a single screen, and eliminates the setup time required by existing analog controllers.


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