Schaub 31 1-1/2" Round Glass Ice Cabinet Knob

The Schaub 31 Ice knob threads 8-32, which is the standard machine screw size for cabinet knobs, so the screws in your existing doors will almost always thread straight in. What does change is screw length: a knob swap onto a thicker door front or a drawer with an applied panel may need a longer 8-32 screw. Measure the front thickness and add about 1/2 inch of thread engagement.

Single-hole mount, so it drops onto any existing knob bore with no new drilling, provided the old hardware was also a one-screw knob. The 1/2 inch base is what sits against the door, so it will conceal a standard 3/16 inch knob bore but will not hide the second hole left behind by a pull. Replacing pulls with these means plugging and refinishing, or moving to a backplate.

For a plain metal knob, look at the Delaney Solid Brass Cabinet Knob or the Deltana KRB175, a heavy-duty round knob with a groove in solid brass at 1-3/4 inch diameter. Both are solid brass rather than the stainless steel and glass build of the Schaub 31, which means no decorative glass face to chip or to match later. The Deltana at 1-3/4 inch is a quarter inch larger across than the Schaub 31's 1-1/2 inch, so it will cover a slightly wider footprint on the door face.

The Emtek Astoria Glass Cabinet Knob is the glass-faced alternative in the comparable set. The Schaub 31 is a 1-1/2 inch round knob with a stainless steel base and a glass face, sold across twelve decorative finishes including Aqua Pearl, Sapphire Silk and White Lace Pebbles. The Astoria is likewise a glass cabinet knob and is carried in Emtek's Schaub Collection, so it keeps the glass material story while giving a different face treatment. If the glass is the reason you are buying, those are the two to put side by side.

Projection is 1 inch from the door face to the front of the knob, on a knob that measures 1-1/2 inches in diameter with a 1/2 inch base where it meets the door. That 1/2 inch footprint matters on frameless cabinets and on narrow drawer rails, since it is all the flat contact area the knob needs. The 1 inch projection leaves room to get fingers behind it without pushing into a walkway.

Glass over a stainless steel base. The decorative face is glass, and the part that carries the load and takes the screw is stainless, which is why it holds up in a kitchen or bath where a solid-glass knob would be the weak point. Stainless also means no plating to wear through at the edges the way a finished brass knob eventually does.

Twelve glass colorways across four texture families. Confetti in Orange, Turquoise, and White/Grey. Pebbles in Green/Blue, Sable, and White Lace. Silk in Ivory, Scarlet, and Sapphire. Pearl in Aqua, Blue, and Clear. Clear Pearl and Ivory Silk are the two that read as neutrals; the Confetti and Pebbles finishes carry visible flecking, so they will not disappear against a painted door the way a plain glass knob does.

Order by the finish code, not by the color name. Each Ice colorway carries a three-letter code (COO Orange Confetti, COT Turquoise Confetti, CWG White/Grey Confetti, GBP Green/Blue Pebbles, IVS Ivory Silk, PAQ Aqua Pearl, PBL Blue Pearl, PCL Clear Pearl, SBP Sable Pebbles, SCS Scarlet Silk, SPS Sapphire Silk, WLP White Lace Pebbles), and quoting that code is what gets you the same glass. Because these are handled glass, expect variation in the flecking between production runs on the Confetti and Pebbles colors. For a large job, buy the full count at once.

A 1-1/2 inch round knob like the Schaub 31 Ice is sized for doors and for drawers up to roughly 24 inches wide. Past that, a single knob makes a wide drawer rack and bind as it comes out, and the fix is either two knobs spaced in from each end or a pull. The Emtek 8665 Select from the Schaub collection is catalogued as a knob/pull, so it covers the wider drawer case in a matching design language.

The Orca Hardware CK-18032 Mission Round Cabinet Knob is the round knob to look at for a craftsman or mission-style run, and the Orca CK-19032 Whistler Cabinet Knob is the other Orca option. Both are cabinet knobs by function, the same as the Schaub 31, so they land in the same screw hole role; the difference is the style vocabulary. The Schaub 31 is a contemporary round knob in the Ice collection with a glass face, which reads modern rather than mission.

Two things decide it. The stainless base and 8-32 thread make it a straight one-for-one swap on existing knob bores, which is what you want when you are turning units without a cabinet demo. The caution is the glass face: on high-turnover cabinetry a glass knob is the piece that chips first, and the twelve Ice colorways are a decorative contemporary line rather than a workhorse MRO knob. For a standardized package where replacement stock has to match for years, a solid brass round knob such as the Deltana KRB175 is the more forgiving spec.

The 31 belongs to Schaub's Ice collection, a contemporary glass line, and mixing across Schaub collections works as long as you hold the projection and scale consistent. Emtek carries several Schaub-collection designs including Allerton, Art Deco, and Astoria Glass, which is the usual route when you want a knob on the uppers and a coordinating piece elsewhere. Keep the same finish family on all the exposed metal so the stainless base does not sit next to a warmer brass.

The Schaub 31 mounts on an 8/32 machine screw through the door with a 1 inch projection and a 1/2 inch base, which is the standard cabinet knob arrangement. The Orca CK-18032 and CK-19032 are both cabinet knobs by function and the Deltana KRB175 is a round knob, so all three occupy the same single-hole knob position rather than a two-hole pull position. Confirm screw length against your door thickness when you change knobs, since base depth differs from one knob to the next.