Key Clamp Three Way Mid Rail Corner for 33.7mm Tube, 90° Galvanised, Size B

The three way mid rail corner takes two mid rails round a corner post at 90°, with the post running straight through. The corner post passes through the central barrel, each mid rail ends in its own closed socket, and three grub screws lock all three tubes. It is the partner to the top rail corner: the top corner caps the post and carries the top rails, and this fitting carries the mid rails lower down. It suits 33.7mm outside diameter tube, the usual size for light handrails, garden and deck rails, and is malleable cast iron with a galvanised finish for indoor and outdoor use. The price shown is for one fitting, with a minimum order of 10.

Why use a mid rail corner

A clean corner at mid height. On a two-rail barrier, both rails have to turn the corner. The mid rail corner turns the lower rail at exactly 90° and the same height on both sides, so the rail looks right and has no gaps.

The post stays in one length. The post passes straight through the barrel, from the floor fitting up to the top rail corner, so there are no joints in the corner post.

No welding. Everything goes together with a hex key, and the corner can be adjusted until the screws are tightened.

Galvanised for outdoors. Made for gardens, decks, paths and yards in all weathers.

Where it is used

Two-rail handrails round deck and patio corners, garden and allotment rails, school and play area barriers, light pedestrian guard rails, and corner frames for stalls, plant supports and enclosures built from 33.7mm tube.

Specifications

Which 33.7mm fitting goes where at a corner

How many do you need?

One mid rail corner at each 90° corner of a two-rail barrier, paired with one top rail corner on the same post. A rail round three sides of a deck has two corners and needs two of each.

Choosing the right size

Key clamps are sized by the tube's outside diameter. 33.7mm tube is often sold as 1" or 25mm nominal bore. Measure across the tube: this corner will not grip 32mm or 42.4mm tube. All three tubes must be the same size. Other sizes and finishes:

• 42.4mm mid rail corner for standard handrails
• 26.9mm mid rail corner for light frames
• Yellow 33.7mm mid rail corner for safety rails indoors
• Black 33.7mm mid rail corner for rails on show indoors

Fitting and care

Slide the corner onto the post at mid-rail height before fitting the top rail corner. Cut each mid rail to length, deburr the ends and push them fully into the sockets. Square up the corner, level the rails and tighten all three grub screws with a 1/4" hex key. Check the screws after the first week and once a year. Touch up scratched galvanising with zinc-rich paint.

Frequently asked questions

Ordering and delivery

Order 10 or more online, with Express UK Delivery to your site and same-day dispatch on orders before 2pm, Monday to Friday. For a full rail kit, call 01744 520 110 or email sales@industrialsuppliesco.co.uk and we will confirm availability and delivery before you order.