# Cylinder Single-Sided Shower Door Knob – 5 Finishes | CRL | IDEAL Shower Doors

URL: https://idealshowerdoors.com/store/p/sdk212ch
Description: The CRL Cylinder Single-Sided Shower Door Knob is a back-to-back knob for frameless glass shower doors that fits 1/4" to 1/2" glass. Made by C.R. Laurence (CRL) in 5 finishes, including polished chrome, brushed nickel, matte black. A small, modern solid brass cylinder knob for one side of the glass.
Seller: IDEAL Shower Doors, Danvers, MA (https://idealshowerdoors.com/store/)

## Product facts

- Part number: SDK212CH, SDK212BN, SDK212MBL, SDK2120RB, SDK212BR (CRL)
- Product: Cylinder Single-Sided Shower Door Knob
- Price by finish: Polished Chrome (SDK212CH) $12.75 each; Brushed Nickel (SDK212BN) $12.75 each; Matte Black (SDK212MBL) $12.75 each; Oil Rubbed Bronze (SDK2120RB) $13.88 each; Polished Brass (SDK212BR) $25.49 each
- Availability: Polished Chrome: in stock; Brushed Nickel: in stock; Matte Black: in stock; Oil Rubbed Bronze: in stock; Polished Brass: in stock
- Summary: The CRL Cylinder Single-Sided Shower Door Knob is a back-to-back knob for frameless glass shower doors that fits 1/4" to 1/2" glass. Made by C.R. Laurence (CRL) in 5 finishes, including polished chrome, brushed nickel, matte black.
- Shipping: free on every order; usually ships within 3-7 business days (US only).
- CRL fees (passed on at cost, never marked up): $5.00 small-order fee on orders under $50. A single unit pays $5.00 in fees. Details: https://idealshowerdoors.com/store/policies#fees
- Returns: All sales final, no returns or exchanges. https://idealshowerdoors.com/store/policies#final
- Buy: https://idealshowerdoors.com/store/p/sdk212ch

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![CRL Cylinder Single-Sided Shower Door Knob, Polished Chrome](https://idealshowerdoors.com/store/img/hw/SDK212CH-1.webp)

CRL · Part SDK212CH In stock

# Cylinder Single-Sided Shower Door Knob — Polished Chrome

A small, modern solid brass cylinder knob for one side of the glass. Clean and simple, with a slim cap on the back.

Polished Chrome ·

$12.75

+ Free shipping

**1/4"–1/2"** Glass thickness

**3/4"** Diameter

**Back to back** Mounting

Finish: **Polished Chrome**

**Ships free to your door** Free on this and every order. Usually ships in 3–7 business days.

**Free shipping** On every order

**All sales final** Check your [glass thickness](https://idealshowerdoors.com/store/measure).

**How-to guides** [Written by installers](https://idealshowerdoors.com/store/guide)

## About this knob

The CRL Cylinder Single-Sided Shower Door Knob is a back-to-back knob for frameless glass shower doors that fits 1/4" to 1/2" glass. Made by C.R. Laurence (CRL) in 5 finishes, including polished chrome, brushed nickel, matte black.

This knob is a simple solid brass cylinder for a clean, minimal look. It mounts to one side of the glass, with a slim cap on the other side instead of a second knob. It's sold without a protective plastic sleeve and is meant for tempered glass. It comes in many finishes. It needs one 3/8" to 1/2" (10 to 12 mm) hole in the glass.

- Single-sided knob with a slim back cap
- 3/4" (19 mm) diameter, stands 1-1/4" (32 mm) from the glass
- Solid brass
- Fits 1/4" to 1/2" (6 to 12 mm) tempered glass
- Needs one 3/8" to 1/2" (10 to 12 mm) hole

## Specs

| Spec | Value |
| --- | --- |
| Finishes | 5 |
| Diameter | 3/4 in. (19 mm) |
| Glazing Thickness | 1/4 in. To 1/2 in. (6 mm To 12 mm) |
| Height | 1-1/4 in. (32 mm) |
| Material | Brass |
| Mounting Type | Glass Mount - Back To Back |

Matching hardware

## Complete the look in Polished Chrome

- [Hinge Shower Door Hinge – Cologne 044 Wall Mount, Offset Back Plate Polished Chrome](https://idealshowerdoors.com/store/p/c0l044ch?part=C0L044CH)

$68.11

- [Glass clamp Beveled Hole-in-Glass Fixed Panel U-Clamp Polished Chrome](https://idealshowerdoors.com/store/p/bcu4ch?part=BCU4CH)

$12.35

- [Towel bar 24" Single-Sided Tubular Towel Bar Polished Chrome](https://idealshowerdoors.com/store/p/bm24ch?part=BM24CH)

$46.23

- [Robe hook Designer Robe Hook Polished Chrome](https://idealshowerdoors.com/store/p/drh1ch?part=DRH1CH)

$19.49

## Common questions

**What glass thickness does the CRL Cylinder Single-Sided Shower Door Knob fit?**

1/4" to 1/2" thick tempered glass. Measure your glass at a bare edge before you order; our measuring guide shows how.

**How many holes does it need?**

One. The two knobs bolt together through a single 3/8" or 1/2" (10 or 12 mm) hole in the glass.

**Is it one knob or a pair?**

A back-to-back pair: one for the inside of the door and one for the outside, with the hardware to join them through the glass.

**What finishes does it come in?**

Polished Chrome, Brushed Nickel, Matte Black, Oil Rubbed Bronze, Polished Brass. Match the finish of the hinges and other hardware on your shower.

**Can I return it?**

No. All sales are final, so please check your [glass thickness](https://idealshowerdoors.com/store/measure), hole spacing and finish before you order.

Pull Handles & Knobs

## More like this

[See all →](https://idealshowerdoors.com/store/c/pulls-knobs)

- [CRL BM8X8CH 8" Back-to-Back Tubular Pull Handle 14 finishes from $32.99 View](https://idealshowerdoors.com/store/p/bm8x8ch)
- [CRL SDK100CH Traditional Back-to-Back Shower Door Knobs 10 finishes from $26.99 View](https://idealshowerdoors.com/store/p/sdk100ch)
- [CRL LP24CH 24" Ladder Style Pull Handle 5 finishes from $250.89 View](https://idealshowerdoors.com/store/p/lp24ch)
- [CRL SQ8X8CH 8" Back-to-Back Square Pull Handle 18 finishes from $68.61 View](https://idealshowerdoors.com/store/p/sq8x8ch)
- [CRL SERNHP2MBL Round Thru-Glass Finger Pull 4 finishes from $26.99 View](https://idealshowerdoors.com/store/p/sernhp2mbl)

Replacing a handle?

### Match your holes, glass and finish.

Measure center to center between your existing holes and check your glass thickness. A new handle has to match both.

[How to measure your glass →](https://idealshowerdoors.com/store/measure)

Popular guides

### Fix it right

- [How to measure your glass →](https://idealshowerdoors.com/store/measure)
- [All guides →](https://idealshowerdoors.com/store/guide)
- [Glass Care Spotless glass Remove water spots and protect your shower glass. Shop Glass Care →](https://idealshowerdoors.com/store/glass-care)