The photo above shows the Stewart Deluxe Wallscreen installed in my home theater. The displayed image is from the 4K Ultra-HD Blu-ray release of the movie "Lucy".
The Stewart Deluxe Wallscreen is offered in a range of standard sizes and aspect ratios as well as in custom sizes and aspect ratios, as specified by the customer. Stewart offers a wide range of surface materials (fabrics) that can be used with this fixed frame screen, including the SnoMatte 100 fabric used for this review. The frame is made from 3.25 inch wide extruded aluminum that is covered (on the front and edges) with a effective light absorbing black material that Stewart calls Velux. The assembled frame if very rigid and a wide range of mounting options are offered.
The SnoMatte 100 screen material is matte white with a gain of 1.0 (i.e., unity gain). This material is essentially the same at the Stewart's StudioTek 100 fabric. The Snomatte 100 material produces a reference quality picture when used along with a high quality projector having adequate light output and when used in a home theater environment with full control over ambient lighting.
Stewart advertises the SnoMatte 100 screen material as supporting "16K+" and this material's superb surface smoothness would surely support high resolution images well beyond what's possible with today's 4K projectors.
The quality that Stewart packs into the Deluxe Wallscreen does come at a price. In the case of the reviewed unit, the cost of the screen would have been a little over $3500, including the shipping cost from California to Florida. Is it worth the cost, that is something you will need to decide for yourself. However, it you are building, or upgrading, your fully light controlled home theater and will be using a high quality projector, then the Stewart Deluxe Wallscreen outfitted with Stewart's SnoMatte 100 (or Sudiotek 100) screen material is certainly worth your serious consideration.
As is the case when selecting any new screen, the screen size and gain must be considered along with the projector's actual light output in order to insure the resulting image will be adequately bright. Since the SnoMatte 100 screen material has a gain of 1.0 that means you will want to pair it with a fairly bright projector (e.g., 1000 or more actual lumens) for a screen size similar to the fairly large 'scope' screen used for this review. Of course, smaller screen sizes can be used with projectors having lower lumens of light output while still producing adequately bright images. If you are using one of the recent 4K (or pseudo 4K) projectors that support High Dynamic Range (HDR), then achieving a relatively high brightness for the image peak highlights becomes important and in that case either a projector with really high light output and/or a screen with fairly high gain may be called for to get the maximum benefit offered by the HDR technology. In that case one of Stewart's higher gain screen surface materials might be a better choice depending on the screen size and the specific projector's light output.