What Is a Tray Frame? (And When to Use One)

A tray frame is an open-front frame designed to hold a stretched canvas or rigid panel so the artwork sits slightly recessed inside the frame, with a small reveal of space around all four edges. It is the standard way of framing canvas work, because a stretched canvas is too deep to sit inside a conventional frame rebate.

We have been making tray frames in our Bollington workshop in Cheshire since 1974. They are one of our core canvas-framing formats, and they suit rigid art panels and face-mounted prints just as well. This guide covers what a tray frame looks like, what it is built to hold, how it differs from a floating frame, how we build one, what the standard and made-to-measure options are, what it costs, and when a tray frame is and is not the right choice.

What a Tray Frame Looks Like

The defining feature is the open front. There is no glazing, no mount, and no front lip pressing onto the artwork. The moulding has an L-shaped profile: the front face of the frame stands proud of the wall, and a horizontal shelf inside the profile is the floor of the tray that the canvas drops onto.

Once the canvas is fitted, a narrow reveal gap of roughly 3mm to 6mm runs around the canvas on all four sides. That gap is the signature of a tray frame. It separates the artwork from the moulding cleanly and stops the frame from crowding the painted surface. The front face of the canvas usually sits flush with, or slightly below, the front edge of the frame, so the painting reads as the focal point and the frame reads as a border.

What Tray Frames Are Built For

Stretched canvas. This is the dominant use. A stretched canvas sits on a wooden stretcher bar, and the depth of that bar is typically between 18mm and 40mm. A normal frame rebate is nowhere near deep enough to hold it, which is why a tray frame for canvas is the format of choice. We size the tray depth to the stretcher depth so the canvas sits cleanly within the moulding. The result, a canvas frame that supports the artwork from behind and leaves the painted surface untouched at the front.

Rigid art panels. Birch ply, MDF, aluminium composite and similar boards are increasingly common substrates for painters and printmakers. Tray frames for panels work in exactly the same way as for canvas: the panel drops into the tray, the reveal gap is set on all four sides, and the panel is held in from behind. The advantage of a panel is a perfectly flat, rigid surface; the tray frame protects the panel edges and gives the work a finished border without compressing the front.

For very large canvases or panels, the tray needs to be sized and engineered carefully. We cover the specifics in our guide to large canvas frames.

Mounted prints on board. Prints that have been face-mounted to dibond, foamboard or another rigid substrate behave like a panel for framing purposes. A tray frame holds them in the same way: drop in, reveal gap set, fixed from behind. It suits photography and large-format prints where the mounting is part of the finish and glazing is not wanted.

Tray Frame vs Floating Frame (Brief)

The two formats look similar at a glance, but they hold the canvas differently. A tray frame holds the canvas inside the moulding profile, with the reveal gap as a thin shadow line. A floating frame supports the canvas from behind and sets it forward of the frame backing, so the canvas appears to hover within the frame with a fully visible gap around it. For the full comparison, including which canvases suit which format, see our tray frame vs floating frame guide.

How a Tray Frame Is Built

We start by measuring the canvas. We need the image dimensions (height and width) and the stretcher depth, because the depth of the tray has to match the depth of the canvas. If the stretcher depth is uneven (older canvases often are), we take the deepest point and add a small allowance.

The moulding is cut to length, the corners are mitred, and the frame is joined and squared. A backing batten is fitted along the rear of the moulding to form the floor of the tray. The canvas is then offered into the tray from the front, the reveal gap is set evenly on all four sides, and the canvas is secured from behind. Depending on the canvas depth and weight, we use offset clips, screws through the batten into the stretcher bar, or a block-mounted system.

There is no glazing. The painted surface is open to the air, which is the right environment for oil and acrylic work; both finishes are stable in normal interior conditions and do not need glass protection in the way that works on paper do.

Finish options run the full range of what we build. Stained or painted hardwood is the most common: oak, ash, tulipwood, walnut. We also spray welded steel frames for a more industrial look, and we gild tray frames for traditional and contemporary applications where a metallic finish is wanted. The tray format does not limit the finish; almost any moulding style can be made as a tray.

Standard vs Made-to-Measure Tray Frames

Ready made tray frames exist for common canvas sizes, sold by online retailers and a few high-street art shops. A stock canvas tray frame typically comes in dimensions like 50x50cm, 60x90cm, A2 or A1, in a small range of finishes. If your canvas is a stock size and a stock stretcher depth, a ready-made tray frame can be a fast, cheap option.

We do not make ready-made tray frames. Harten builds made to measure canvas frames only, sized to the canvas in front of us. Three reasons that matters in practice. First, stretcher depths vary: a canvas labelled "standard" can be anywhere from 18mm to 25mm, and a deep-edge canvas can be 38mm or more. A ready-made frame sized for a 20mm stretcher will not sit right on a 35mm canvas. Second, stretcher bars are rarely perfectly square; we measure the actual piece, not the catalogue size. Third, the reveal gap should be tuned to the work. A 10mm reveal looks lazy on a small canvas and tight on a large one. The right gap is a judgement call, not a fixed dimension.

The same logic applies to tray frames for panels. Birch ply and aluminium composite are sold in stock thicknesses, but the panel itself is usually trimmed to the artwork, so the outer dimensions are bespoke. A made-to-measure tray frame is the only way to get a clean reveal on an awkward panel size.

How Much Does a Tray Frame Cost?

Tray framing at Harten starts from around £250 for a small canvas. The price scales with three things: the size of the canvas, the depth of the canvas (a deeper tray uses more moulding), and the finish (a sprayed welded-steel tray costs more than a stained oak one, and a gilded tray costs more again).

For a detailed breakdown of how custom framing is priced across all our formats, see our guide to custom framing prices.

When a Tray Frame Is the Right Choice (and When It Isn't)

A tray frame is the right choice for stretched canvas, rigid art panels, oil paintings on board, and prints face-mounted to a rigid substrate. In each case the artwork is durable, the surface is stable in normal room conditions, and there is no need for glazing.

It is not the right choice for works on paper. Watercolours, gouache, pastels, photographs, prints on uncoated paper and original drawings all need glazing for protection from dust, handling and ultraviolet light. A tray frame is open at the front and offers none of that. For these works, a conventional frame with a mount and conservation glazing is the right format.

It is also not the right choice for fragile or valuable works that need a sealed conservation environment. Museum-grade framing uses a sealed back, acid-free materials throughout and conservation glazing to control the microclimate around the artwork. A tray frame cannot deliver that.

If you have a canvas or a panel and you want to know whether a tray frame is the right format, send us the image dimensions and the stretcher (or panel) depth. We will quote on the right format for the piece. If a tray frame is not the right answer, we will say so and recommend the format that is. We make every type of canvas frame in our Cheshire workshop, with a 5-year guarantee on the build.