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

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

Product ID: 87964546

✨Polished brass corrosion-resistant finish

🔐19mm controlled window restriction

🔧Durable metal build for long-lasting security

₨525

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Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Lock in safety and style with every window

TIMELESS ELEGANCE - Polished brass finish adds classic charm with modern durability
SECURE YOUR SANCTUARY - Limits sash window opening to keep kids safe and intruders out
BREATHE EASY STAY SAFE - 19mm projection allows fresh air without compromising security
EFFORTLESS INSTALLATION - Designed for traditional timber sash windows with included key and screws
TRADE READY BULK SUPPLY - Perfect for large projects and professional installations

The Fulton & Bray FB319 Sash Window Stop Restrictor offers a robust 19mm window opening limit, combining child safety and security with a polished brass finish that resists corrosion. Ideal for traditional timber sash windows, it ensures controlled ventilation while preventing unauthorized access. Supplied with a key and screws, this durable metal restrictor is perfect for residential and commercial projects, delivering reliable, long-lasting protection with a touch of classic elegance.

Specifications

ASIN	B07FZ9MKX3
Batteries Required?	No
Batteries included?	No
Best Sellers Rank	12,215 in DIY & Tools ( See Top 100 in DIY & Tools ) 20 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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