What size drill bit is required to install these?

you need 10mm for wood drill (even if they say 9mm), depth 13/14mm. To put the ferrule you need Allen key probably 6.5mm (much bigger than the allen key provided)

What length is the barrel on these sash stops? i.e. the brass barrel that protrudes once fitted.

It protrudes 20mm and have a diameter of 15mm. It is screwed into the fitting in the window using an Allen key

How are these installed? Will they fit into a plastic frame?

Not suitable for plastic frames.

I drill the hole in the frame, then how do i screw it in? Or do i hammer the screw in?

If I recall correctly you screw in the treaded receiver using an suitable Allan key that slots into it.

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Fulton & Bray FB319 Sash Window Stop Restrictor for Child Safety and Security - Comes With Key Included (Polished Brass)

Fulton & Bray FB319 Sash Window Stop Restrictor for Child Safety and Security - Comes With Key Included (Polished Brass)

Product ID: 87964546

✨Polished brass corrosion-resistant finish

🔑Includes secure key for child safety

🔒19mm controlled window restriction

₹ 3506

Duties & taxes included

In stock

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Description

🔐 Lock in safety and style—because your home deserves the best.

TRADE READY BULK SUPPLY - Perfect for large projects and professional installations with bulk packaging convenience.
BREATHE EASY STAY PROTECTED - Allows controlled ventilation without compromising security or access control.
SECURE YOUR SPACE WITH PRECISION - Limits sash window opening to just 19mm for ultimate child safety and peace of mind.
TIMELESS ELEGANCE MEETS DURABILITY - Polished brass finish offers a classic look while resisting corrosion for lasting style.
EFFORTLESS INSTALLATION ON TIMBER SASH - Designed specifically for traditional sash windows, ensuring a seamless fit and reliable performance.

The Fulton & Bray FB319 Sash Window Stop Restrictor is a polished brass, durable metal security accessory designed to limit sash window openings to 19mm. Ideal for child safety and controlled ventilation, it includes a key for added security and is bulk packed for trade use. Perfectly suited for traditional timber sash windows, it combines classic aesthetics with long-lasting performance.

Specifications

ASIN	B07FZ9MKX3
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	24,675 in DIY & Tools ( See Top 100 in DIY & Tools ) 42 in Window Locks & Latches
Colour	Polished Brass
Customer Reviews	4.4 4.4 out of 5 stars (150)
Date First Available	10 Jun. 2016
Finish	Polished
Guaranteed software updates until	unknown
Included Components	Key, Screws, Socket
Installation method	Window
Item Package Quantity	1
Item Weight	146 g
Item model number	FB319BP
Manufacturer	Fulton & Bray
Material	Brass
Package Dimensions	14.6 x 10.6 x 1.5 cm; 146 g
Part Number	FB319
Plug profile	Window
Power Source	Corded Electric
Size	19mm
Style	Contemporary

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