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

URL: https://idealshowerdoors.com/store/p/sdk270ch
Description: The CRL Square Single-Sided 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, matte black, polished nickel. A small square knob that turns a towel bar into a towel bar and knob combination.
Seller: IDEAL Shower Doors, Danvers, MA (https://idealshowerdoors.com/store/)

## Product facts

- Part number: SDK270CH, SDK270MBL, SDK270PN, SDK270SB, SDK270BBRZ (CRL)
- Product: Square Single-Sided Knob
- Price by finish: Polished Chrome (SDK270CH) $22.49 each; Matte Black (SDK270MBL) $11.63 each; Polished Nickel (SDK270PN) $20.99 each; Satin Brass (SDK270SB) $11.25 each; Brushed Bronze (SDK270BBRZ) $11.63 each
- Availability: Polished Chrome: in stock; Matte Black: backordered (can still be ordered; ships when restocked); Polished Nickel: in stock; Satin Brass: in stock; Brushed Bronze: in stock
- Summary: The CRL Square Single-Sided 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, matte black, polished nickel.
- 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/sdk270ch

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![CRL Square Single-Sided Knob, Polished Chrome](https://idealshowerdoors.com/store/img/hw/SDK270CH-1.webp)

CRL · Part SDK270CH In stock

# Square Single-Sided Knob — Polished Chrome

A small square knob that turns a towel bar into a towel bar and knob combination. Comes with its own 1/4-20 threaded screw.

Polished Chrome ·

$22.49

+ 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 Square Single-Sided 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, matte black, polished nickel.

This compact square knob is made to pair with a square-style towel bar, giving you a place to hang a towel and a knob to open the door in one piece of hardware. It's made of brass with a crisp square shape. The knob measures 3/4" x 3/4" x 1-3/16" and works with glass from 1/4" to 1/2" thick. It mounts to the towel bar with the included 1/4-20 threaded screw, which fits most towel bars of this style.

- Turns a towel bar into a towel bar and knob combination
- 3/4" x 3/4" x 1-3/16" (19 x 19 x 30 mm)
- Brass construction with a square shape
- Includes a 1/4-20 threaded screw
- Works with 1/4" to 1/2" (6 to 12 mm) glass

## 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 | 3/4 in. (19 mm) |
| Material | Brass |
| Mounting Type | Glass Mount - Back To Back |

Matching hardware

## Complete the look in Polished Chrome

- [Hinge Shower Door Hinge – Vienna 037 Wall Mount, Full Back Plate Polished Chrome](https://idealshowerdoors.com/store/p/v1e037ch?part=V1E037CH)

$58.94

- [Glass clamp Square Hole-in-Glass Fixed Panel U-Clamp Polished Chrome](https://idealshowerdoors.com/store/p/scu4ch?part=SCU4CH)

$11.70

- [Towel bar 24" Single-Sided Square Towel Bar Polished Chrome](https://idealshowerdoors.com/store/p/sq24ch?part=SQ24CH)

$86.13

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

$19.49

- [Door stop Square Frameless Shower Door Stop Polished Chrome](https://idealshowerdoors.com/store/p/dssq1ch?part=DSSQ1CH)

$25.99

## Common questions

**What glass thickness does the CRL Square Single-Sided 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, Matte Black, Polished Nickel, Satin Brass, Brushed Bronze. 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)